#include <bits/stdc++.h>
#include "bits/stdc++.h"
#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <string>
#include <sstream>
#include <cmath>
#include <stack>
#include <queue>
#include <cctype>
#include <stdio.h>
#include <map>
#include <unordered_map>
#include <string.h>
#include <utility>

typedef long long ll;
const int INF = 1e8;

#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
using namespace std;

typedef pair<int, int> P;

vector<P> mania;
vector<P> local_speciality;

int mentaiko_number[1001];

int main() {

	int n = 0;
	cin >> n;

	int a = 0, b = 0;
	for (int i = 0; i < n; i++) {
		cin >> a >> b;

		mania.push_back(P(a, b));
	}

	int m = 0;
	cin >> m;

	for (int i = 0; i < m; i++) {
		cin >> a >> b;
		local_speciality.push_back(P(a, b));
	}

	bool times= false;
	for (int i = 0; i < n; i++) {
		P mania_state = mania[i];
		for (int j = 0; j < m; j++) {
			P mentaiko = local_speciality[j];

			if (mania_state.first >= mentaiko.first
					&& mania_state.second <= mentaiko.second) {

				mentaiko_number[j]++;

				times = true;
			}
		}
	}



	int compare=0;
	if(times){
	for(int i=0; i<m; i++){
		if(mentaiko_number[i] !=0){


			compare = max(compare, mentaiko_number[i]);
		}
	}

	for(int i=0; i<m; i++){
			if(mentaiko_number[i] ==compare){
				cout<<i+1<<endl;
			}
		}

	}else {
		cout<<0<<endl;
	}

	return 0;
}