#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;

#define int long long

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

int N, M;
int A[10000], B[10000], X[1000], Y[1000];
int k[1000] = {};

signed main() {
    cin >> N;
    for (int i = 0; i < N; i++) {
        cin >> A[i] >> B[i];
    }
    cin >> M;
    for (int i = 0; i < M; i++) {
        cin >> X[i] >> Y[i];
    }
    for (int i = 0; i < M; i++) {
        for (int j = 0; j < N; j++) {
            if (X[i] <= A[j] && Y[i] >= B[j]) {
                k[i]++;
            }
        }
    }
    int bg = 0;
    for (int i = 0; i < M; i++) {
        bg = max(bg, k[i]);
    }
    if (bg == 0) {
        cout << 0 << endl;
        return 0;
    }
    for (int i = 0; i < M; i++) {
        if (k[i] == bg) {
            cout << i + 1 << endl;
        }
    }
    return 0;
}