#include <iostream>
using namespace std;

int cnt[1001];
int member[10001][2];

int main() {
	int N;
	cin >> N;
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < 2; j++) {
			cin >> member[i][j];
		}
	}
	int M;
	cin >> M;
	for (int i = 1; i <= M; i++) {
		int X, Y;
		cin >> X >> Y;
		for (int j = 0; j < N; j++) {
			if (X <= member[j][0] && Y >= member[j][1]) {
				cnt[i]++;
			}
		}
	}
	int max = 0;
	for (int i = 1; i <= M; i++) {
		if (max < cnt[i]) {
			max = cnt[i];
		}
	}
	if (max == 0) {
		cout << 0 << endl;
	} else {
		for (int i = 1; i <= M; i++) {
			if (cnt[i] == max) {
				cout << i << endl;
			}
		}
	}
}