#include <iostream>
#include <vector>
using namespace std;
int main(){
	int N;
	cin >> N;
	vector<int> A(N), B(N);
	for (int i = 0; i < N; i++){
		cin >> A[i] >> B[i];
	}
	int M;
	cin >> M;
	vector<int> X(M), Y(M);
	for (int i = 0; i < M; i++){
		cin >> X[i] >> Y[i];
	}
	vector<int> cnt(M, 0);
	for (int i = 0; i < N; i++){
		for (int j = 0; j < M; j++){
			if (X[j] <= A[i] && Y[j] >= B[i]){
				cnt[j]++;
			}
		}
	}
	int mx = 0;
	for (int i = 0; i < M; i++){
		mx = max(mx, cnt[i]);
	}
	if (mx == 0){
		cout << 0 << endl;
	} else {
		for (int i = 0; i < M; i++){
			if (cnt[i] == mx){
				cout << i + 1 << endl;
			}
		}
	}
}