#include "bits/stdc++.h"

using namespace std;

using ll = long long;
using ld = long double;

const int INF = (1 << 30) - 1;
const ll INF64 = ((ll)1 << 62) - 1;
const double PI = 3.1415926535897932384626433832795;

const int dx[] = { 0, 1, 0, -1 };
const int dy[] = { -1, 0, 1, 0 };

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);

	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> buy(m);
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			if (x[j] <= a[i] && b[i] <= y[j]) {
				buy[j]++;
			}
		}
	}

	int maxCnt = 0;
	for (int i = 0; i < m; i++) {
		maxCnt = max(maxCnt, buy[i]);
	}

	if (maxCnt == 0) {
		cout << 0 << endl;
		return 0;
	}

	for (int i = 0; i < m; i++) {
		if (maxCnt == buy[i]) {
			cout << i + 1 << endl;
		}
	}
	return 0;
}