#include "bits/stdc++.h"
using namespace std;

#define DEBUG(x) cout<<#x<<": "<<x<<endl;
#define DEBUG_VEC(v) cout<<#v<<":";for(int i=0;i<v.size();i++) cout<<" "<<v[i]; cout<<endl

typedef long long ll;
#define vi vector<int>
#define vl vector<ll>
#define vii vector< vector<int> >
#define vll vector< vector<ll> >
#define vs vector<string>
#define pii pair<int,int>
#define pis pair<int,string>
#define psi pair<string,int>
#define pll pair<ll,ll>
const int inf = 1000000001;
const ll INF = 2e18 * 2;
#define MOD 1000000007
#define mod 1000000009
#define pi 3.14159265358979323846
#define Sp(p) cout<<setprecision(15)<< fixed<<p<<endl;
int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 };
int dx2[8] = { 1,1,0,-1,-1,-1,0,1 }, dy2[8] = { 0,1,1,1,0,-1,-1,-1 };


int main() {
	int n, m, i, j;
	cin >> n;
	vi a(n), b(n);
	for (i = 0; i < n; i++) {
		cin >> a[i] >> b[i];
	}
	cin >> m;
	vi x(m), y(m);
	for (i = 0; i < m; i++) {
		cin >> x[i] >> y[i];
	}
	vi num(m);
	for (i = 0; i < n; i++) {
		for (j = 0; j < m; j++) {
			if (x[j] <= a[i] && y[j] >= b[i]) {
				num[j]++;
			}
		}
	}
	int M = -1;
	for (i = 0; i < m; i++) {
		M = max(M, num[i]);
	}
	if (M == 0) {
		cout << 0 << endl;
		return 0;
	}
	for (i = 0; i < m; i++) {
		if (num[i] == M) {
			cout << i + 1 << endl;
		}
	}
}