#include<stdio.h>
int main()
{
	int n;
	scanf("%d", &n);
	int i, j;
	int a[10004], b[10004];
	for (i = 0; i < n; i++)
		scanf("%d %d", &a[i], &b[i]);
	int m;
	scanf("%d", &m);
	int x[1003], y[1003];
	for (i = 0; i < m; i++)
		scanf("%d %d", &x[i], &y[i]);
	int c[1003];
	for (i = 0; i < m; i++)
		c[i] = 0;
	for (i = 0; i < n; i++)
		for (j = 0; j < m; j++)
			if (x[j] <= a[i] && y[j] >= b[i])
				c[j]++;
	int max = 0;
	for (i = 0; i < m; i++)
		if (max < c[i])
			max = c[i];
	if (max == 0)
		printf("0\n");
	else
	{
		for (i = 0; i < m; i++)
			if (c[i] == max)
				printf("%d\n", i + 1);
	}
	return 0;
}