#include <bits/stdc++.h>
using namespace std;

using ll=long long;
#define int ll

#define rng(i,a,b) for(int i=int(a);i<int(b);i++)
#define rep(i,b) rng(i,0,b)
#define gnr(i,a,b) for(int i=int(b)-1;i>=int(a);i--)
#define per(i,b) gnr(i,0,b)
#define pb push_back
#define eb emplace_back
#define a first
#define b second
#define bg begin()
#define ed end()
#define all(x) x.bg,x.ed
#define si(x) int(x.size())
#ifdef LOCAL
#define dmp(x) cerr<<__LINE__<<" "<<#x<<" "<<x<<endl
#else
#define dmp(x) void(0)
#endif

template<class t,class u> void chmax(t&a,u b){if(a<b)a=b;}
template<class t,class u> void chmin(t&a,u b){if(b<a)a=b;}

template<class t> using vc=vector<t>;
template<class t> using vvc=vc<vc<t>>;

using pi=pair<int,int>;
using vi=vc<int>;

template<class t,class u>
ostream& operator<<(ostream& os,const pair<t,u>& p){
	return os<<"{"<<p.a<<","<<p.b<<"}";
}

template<class t> ostream& operator<<(ostream& os,const vc<t>& v){
	os<<"{";
	for(auto e:v)os<<e<<",";
	return os<<"}";
}

#define mp make_pair
#define mt make_tuple
#define one(x) memset(x,-1,sizeof(x))
#define zero(x) memset(x,0,sizeof(x))
#ifdef LOCAL
void dmpr(ostream&os){os<<endl;}
template<class T,class... Args>
void dmpr(ostream&os,const T&t,const Args&... args){
	os<<t<<" ";
	dmpr(os,args...);
}
#define dmp2(...) dmpr(cerr,__LINE__,##__VA_ARGS__)
#else
#define dmp2(...) void(0)
#endif

using uint=unsigned;
using ull=unsigned long long;

template<class t,size_t n>
ostream& operator<<(ostream&os,const array<t,n>&a){
	return os<<vc<t>(all(a));
}

template<int i,class T>
void print_tuple(ostream&,const T&){
}

template<int i,class T,class H,class ...Args>
void print_tuple(ostream&os,const T&t){
	if(i)os<<",";
	os<<get<i>(t);
	print_tuple<i+1,T,Args...>(os,t);
}

template<class ...Args>
ostream& operator<<(ostream&os,const tuple<Args...>&t){
	os<<"{";
	print_tuple<0,tuple<Args...>,Args...>(os,t);
	return os<<"}";
}

template<class t>
void print(t x,int suc=1){
	cout<<x;
	if(suc==1)
		cout<<"\n";
	if(suc==2)
		cout<<" ";
}

ll read(){
	ll i;
	cin>>i;
	return i;
}

vi readvi(int n,int off=0){
	vi v(n);
	rep(i,n)v[i]=read()+off;
	return v;
}

template<class T>
void print(const vector<T>&v,int suc=1){
	rep(i,v.size())
		print(v[i],i==int(v.size())-1?suc:2);
}

string readString(){
	string s;
	cin>>s;
	return s;
}

template<class T>
T sq(const T& t){
	return t*t;
}

//#define CAPITAL
void yes(bool ex=true){
	#ifdef CAPITAL
	cout<<"YES"<<"\n";
	#else
	cout<<"Yes"<<"\n";
	#endif
	if(ex)exit(0);
}
void no(bool ex=true){
	#ifdef CAPITAL
	cout<<"NO"<<"\n";
	#else
	cout<<"No"<<"\n";
	#endif
	if(ex)exit(0);
}
void possible(bool ex=true){
	#ifdef CAPITAL
	cout<<"POSSIBLE"<<"\n";
	#else
	cout<<"Possible"<<"\n";
	#endif
	if(ex)exit(0);
}
void impossible(bool ex=true){
	#ifdef CAPITAL
	cout<<"IMPOSSIBLE"<<"\n";
	#else
	cout<<"Impossible"<<"\n";
	#endif
	if(ex)exit(0);
}

constexpr ll ten(int n){
	return n==0?1:ten(n-1)*10;
}

const ll infLL=LLONG_MAX/3;

#ifdef int
const int inf=infLL;
#else
const int inf=INT_MAX/2-100;
#endif

int topbit(signed t){
	return t==0?-1:31-__builtin_clz(t);
}
int topbit(ll t){
	return t==0?-1:63-__builtin_clzll(t);
}
int botbit(signed a){
	return a==0?32:__builtin_ctz(a);
}
int botbit(ll a){
	return a==0?64:__builtin_ctzll(a);
}
int popcount(signed t){
	return __builtin_popcount(t);
}
int popcount(ll t){
	return __builtin_popcountll(t);
}
bool ispow2(int i){
	return i&&(i&-i)==i;
}
ll mask(int i){
	return (ll(1)<<i)-1;
}

bool inc(int a,int b,int c){
	return a<=b&&b<=c;
}

template<class t> void mkuni(vc<t>&v){
	sort(all(v));
	v.erase(unique(all(v)),v.ed);
}

ll rand_int(ll l, ll r) { //[l, r]
	#ifdef LOCAL
	static mt19937_64 gen;
	#else
	static mt19937_64 gen(chrono::steady_clock::now().time_since_epoch().count());
	#endif
	return uniform_int_distribution<ll>(l, r)(gen);
}

template<class t>
void myshuffle(vc<t>&a){
	rep(i,si(a))swap(a[i],a[rand_int(0,i)]);
}

template<class t>
int lwb(const vc<t>&v,const t&a){
	return lower_bound(all(v),a)-v.bg;
}

//VERIFY: yosupo
//CF Global3 H
//ARC073 F
//point update
template<class T,class F>
struct SegTree{
	vc<T> buf;
	int s;
	const F f;
	const T g;
	SegTree(F ff,T gg):f(ff),g(gg){}
	void init(const vc<T>& d){
		int n=d.size();
		s=1;
		while(s<n)s*=2;
		buf.resize(s*2,g);
		rep(i,n)
			buf[i+s]=d[i];
		gnr(i,1,s)
			u(i);
	}
	SegTree(const vc<T>& d,F ff,T gg):f(ff),g(gg){
		init(d);
	}
	void u(int i){
		buf[i]=f(buf[i*2],buf[i*2+1]);
	}
	void set(int i,T t){
		i+=s;
		buf[i]=t;
		while(i>>=1)u(i);
	}
	void upd(int i,T t){
		i+=s;
		buf[i]=f(buf[i],t);
		while(i>>=1)u(i);
	}
	T get(int b,int e,int l,int r,int i){
		if(e<=l||r<=b)return g;
		if(b<=l&&r<=e)return buf[i];
		int m=(l+r)/2;
		return f(get(b,e,l,m,i*2),get(b,e,m,r,i*2+1));
	}
	T get(int b,int e){
		return get(b,e,0,s,1);
	}
};
template<class T,class F>
SegTree<T,F> segtree(const vc<T>& d,F f,T g){
	return SegTree<T,F>(d,f,g);
}

//内部でグラフをいじるから in,out を使うときは注意
//VERIFY: yosupo
//CF530F
//CodeChef Persistent Oak
//AOJ GRL5C
template<class E>
struct HLD{
	vvc<E> g;
	int n,rt,cnt;
	vi sub,in,out,par,head,dep;
	int dfs1(int v,int p,int d){
		par[v]=p;
		dep[v]=d;
		g[v].erase(remove(all(g[v]),p),g[v].ed);
		for(auto&e:g[v]){
			sub[v]+=dfs1(e,v,d+1);
			if(sub[g[v][0]]<sub[e])
				swap(g[v][0],e);
		}
		return sub[v];
	}
	void dfs2(int v,int h){
		in[v]=cnt++;
		head[v]=h;
		for(int to:g[v])
			dfs2(to,to==g[v][0]?h:to);
		out[v]=cnt;
	}
	HLD(){}
	HLD(const vvc<E>&gg,int rr):g(gg),n(g.size()),rt(rr),cnt(0),
		sub(n,1),in(n),out(n),par(n,-1),head(n),dep(n){
		dfs1(rt,-1,0);
		dfs2(rt,rt);
	}
	int lca(int a,int b){
		while(head[a]!=head[b]){
			if(dep[head[a]]>dep[head[b]])
				swap(a,b);
			b=par[head[b]];
		}
		if(dep[a]>dep[b])
			swap(a,b);
		return a;
	}
	int len(int a,int b){
		return dep[a]+dep[b]-dep[lca(a,b)]*2;
	}
	bool asde(int a,int b){
		return in[a]<=in[b]&&out[b]<=out[a];
	}
	//XX Opencup GP of Korea
	//CF625 F
	vi index;
	void init(){
		index.resize(n);
	}
	//vs を含む virtual tree を返す
	//返すのは辺の集合
	//辺の端点は，元の木における番号
	//元の木における番号を virtual tree の頂点番号に写すのが，index という変数
	vc<pi> tree_compress(vi vs){
		assert(index.size());
		auto comp = [&](int x,int y){
			return in[x] < in[y];
		};
		sort(all(vs),comp);
		vs.erase(unique(all(vs)),vs.ed);
		int k = vs.size();
		rep(i,k-1){
			vs.pb(lca(vs[i],vs[i+1]));
		}
		sort(all(vs),comp);
		vs.erase(unique(all(vs)),vs.ed);
		k = vs.size();
		rep(i,k) index[vs[i]] = i;
		vc<pi> es;
		rng(i,1,k){
			int p = lca(vs[i-1],vs[i]);
			es.eb(vs[i],p);
		}
		return es;
	}
	vi val;
	void dfs(int v,int w){
		chmax(w,val[v]);
		val[v]=w;
		for(auto c:g[v]){
			dfs(c,w);
		}
	}
	void initval(vi raw){
		val=raw;
		dfs(rt,0);
	}
};

signed main(){
	cin.tie(0);
	ios::sync_with_stdio(0);
	cout<<fixed<<setprecision(20);
	
	int n,k,q;cin>>n>>k>>q;
	vi c=readvi(n);
	vi a=readvi(k,-1);
	
	vvc<int> t(n);
	rep(i,n-1){
		int x,y;cin>>x>>y;
		x--;y--;
		t[x].pb(y);
		t[y].pb(x);
	}
	
	HLD<int> h(t,0);
	
	h.initval(c);
	
	vc<pi> in(k),out(k);
	rep(i,k){
		in[i]=pi(h.in[a[i]],a[i]);
		out[i]=pi(h.out[a[i]],a[i]);
	}
	
	auto pimin=[](pi x,pi y){return min(x,y);};
	auto pimax=[](pi x,pi y){return max(x,y);};
	
	auto segmin=segtree(in,pimin,pi(inf,-1));
	auto segmax=segtree(out,pimax,pi(-inf,-1));
	
	rep(_,q){
		int z;cin>>z;
		if(z==1){
			int x,y;cin>>x>>y;
			x--;
			y--;
			segmin.set(x,pi(h.in[y],y));
			segmax.set(x,pi(h.out[y],y));
		}else{
			int l,r;cin>>l>>r;
			l--;
			dmp2(l,r);
			int x=segmin.get(l,r).b;
			int y=segmax.get(l,r).b;
			dmp2(x,y);
			int lca=h.lca(x,y);
			print(h.val[lca]);
		}
	}
}