#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
//-------------------------------------------------------

template<class V,int NV> class SegTree_ma {
public:
	vector<V> val;
	static V const def=0;
	V comp(V l,V r){ return max(l,r);};
	
	SegTree_ma(){val=vector<V>(NV*2,def);};
	V getval(int x,int y,int l=0,int r=NV,int k=1) { // x<=i<y
		if(r<=x || y<=l) return def;
		if(x<=l && r<=y) return val[k];
		return comp(getval(x,y,l,(l+r)/2,k*2),getval(x,y,(l+r)/2,r,k*2+1));
	}
	void update(int entry, V v) {
		entry += NV;
		val[entry]=v; //上書きかチェック
		while(entry>1) entry>>=1, val[entry]=comp(val[entry*2],val[entry*2+1]);
	}
};
template<class V,int NV> class SegTree_mi {
public:
	vector<V> val;
	static V const def=1<<30;
	V comp(V l,V r){ return min(l,r);};
	
	SegTree_mi(){val=vector<V>(NV*2,def);};
	V getval(int x,int y,int l=0,int r=NV,int k=1) { // x<=i<y
		if(r<=x || y<=l) return def;
		if(x<=l && r<=y) return val[k];
		return comp(getval(x,y,l,(l+r)/2,k*2),getval(x,y,(l+r)/2,r,k*2+1));
	}
	void update(int entry, V v) {
		entry += NV;
		val[entry]=v; //上書きかチェック
		while(entry>1) entry>>=1, val[entry]=comp(val[entry*2],val[entry*2+1]);
	}
};

int N,K,Q;
int C[101010];
int A[101010];
int P[21][200005],D[200005];
vector<int> E[101010];
int id;
int L[101010],R[101010],RL[101010];

SegTree_ma<int,1<<20> ma;
SegTree_mi<int,1<<20> mi;

void dfs(int cur) {
	L[cur]=id++;
	RL[L[cur]]=cur;
	ITR(it,E[cur]) {
		D[*it]=D[cur]+1;
		P[0][*it]=cur;
		C[*it]=max(C[*it],C[cur]);
		dfs(*it);
	}
	R[cur]=id;
}

int lca(int a,int b) {
	int ret=0,i,aa=a,bb=b;
	if(D[aa]>D[bb]) swap(aa,bb);
	for(i=19;i>=0;i--) if(D[bb]-D[aa]>=1<<i) bb=P[i][bb];
	for(i=19;i>=0;i--) if(P[i][aa]!=P[i][bb]) aa=P[i][aa], bb=P[i][bb];
	return (aa==bb)?aa:P[0][aa];               // vertex
}

void solve() {
	int i,j,k,l,r,x,y; string s;
	
	cin>>N>>K>>Q;
	FOR(i,N) cin>>C[i];
	FOR(i,K) cin>>A[i], A[i]--;
	FOR(i,N-1) {
		cin>>x>>y;
		E[y-1].push_back(x-1);
	}
	dfs(0);
	FOR(i,19) FOR(x,N) P[i+1][x]=P[i][P[i][x]];
	
	FOR(i,K) {
		ma.update(i,L[A[i]]);
		mi.update(i,L[A[i]]);
	}
	while(Q--) {
		cin>>i>>x>>y;
		if(i==1) {
			x--,y--;
			A[x]=y;
			ma.update(x,L[A[x]]);
			mi.update(x,L[A[x]]);
		}
		else {
			i=RL[mi.getval(x-1,y)];
			j=RL[ma.getval(x-1,y)];
			int lc=lca(i,j);
			cout<<C[lc]<<endl;
		}
	}
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false), cin.tie(0);
	FOR(i,argc-1) s+=argv[i+1],s+='\n'; FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	cout.tie(0); solve(); return 0;
}