#include <math.h>
#include <ctype.h>
#include <bits/stdc++.h>
using namespace std;
#define FOR(i, a, n) for (int i = a; i < n; i++)
#define REP(i, n) for(int i = 0; i < n; i++)

int main(){
    int n;
    cin >> n;

    int A[n], B[n];
    REP(i, n) cin >> A[i] >> B[i];

    int m;
    cin >> m;

    int X[m], Y[m];
    REP(i, m) cin >> X[i] >> Y[i];

    int T[m] = {};

    REP(i, n){
        REP(j, m){
            if(A[i] >= X[j] and B[i] <= Y[j]){
                T[j]++;
            }
        }
    }

    vector<int> V;
    int ma = 0;
    REP(i, m){
        if(T[i] > ma and T[i] != 0){
            V.clear();
            V.push_back(i + 1);
            ma = T[i];
        }else if(T[i] == ma and T[i] != 0){
            V.push_back(i + 1);
        }
    }

    if(V.size()){
        REP(i, V.size()){
            cout << V[i] << endl;
        }
    }else cout << 0 << endl;
    

    return 0;
}