#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
using namespace std;
using std::cout;
using std::cin;
using std::endl;
using ll=long long;
using ld=long double;
ll ILL=2167167167167167167;
const int INF=2100000000;
const int mod=998244353;
#define rep(i,a,b) for (int i=a;i<b;i++)
#define all(p) p.begin(),p.end()
template<class T> using _pq = priority_queue<T, vector<T>, greater<T>>;
template<class T> ll LB(vector<T> &v,T a){return lower_bound(v.begin(),v.end(),a)-v.begin();}
template<class T> ll UB(vector<T> &v,T a){return upper_bound(v.begin(),v.end(),a)-v.begin();}
template<class T> bool chmin(T &a,const T &b){if(a>b){a=b;return 1;}else return 0;}
template<class T> bool chmax(T &a,const T &b){if(a<b){a=b;return 1;}else return 0;}
template<class T> void So(vector<T> &v) {sort(v.begin(),v.end());}
template<class T> void Sore(vector<T> &v) {sort(v.begin(),v.end(),[](T x,T y){return x>y;});}
void yneos(bool a){if(a) cout<<"Yes\n"; else cout<<"No\n";}
template<class T> void vec_out(vector<T> &p){for(int i=0;i<(int)(p.size());i++){if(i) cout<<" ";cout<<p[i];}cout<<"\n";}
template<class T> T vec_min(vector<T> &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmin(ans,x);return ans;}
template<class T> T vec_max(vector<T> &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmax(ans,x);return ans;}
template<class T> T vec_sum(vector<T> &a){assert(!a.empty());T ans=a[0]-a[0];for(auto &x:a) ans+=x;return ans;}




void solve();
// oddloop
int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	
	int t=1;
	//cin>>t;
	rep(i,0,t) solve();
}

void solve(){
	int N,K,Q;
	cin>>N>>K>>Q;
	vector<vector<pair<int,int>>> pos(N),rev(N);
	vector<int> p(N),r(N);
	rep(i,0,N) p[i]=i,r[i]=i,rev[i].push_back({-1,i}),pos[i].push_back({-1,i});
	vector<int> A(K),B(K);
	rep(i,0,K){
		cin>>A[i]>>B[i];
		A[i]--,B[i]--;
		swap(p[A[i]],p[B[i]]);
		swap(r[p[A[i]]],r[p[B[i]]]);
		pos[A[i]].push_back({i,p[A[i]]});
		pos[B[i]].push_back({i,p[B[i]]});
		rev[p[A[i]]].push_back({i,A[i]});
		rev[p[B[i]]].push_back({i,B[i]});
	}
	rep(query,0,Q){
		int L,R,X;
		cin>>L>>R>>X;
		L--;
		X--;
		R--;
		int b=UB(pos[X],{R,INF})-1;
		int ind=pos[X][b].second;
		int c=LB(rev[ind],{L,-1});
		cout<<rev[ind][c-1].second+1<<"\n";
	}
}