#include<stdio.h>
int main()
{
	int people;
	scanf("%d", &people);
	int price1[people], spice1[people];
	for (int i = 0; i < people; i++){
		scanf("%d %d", &price1[i], &spice1[i]);
	}
	
	int type;
	scanf("%d", &type);
	int price2[type], spice2[type];
	for (int i = 0; i < type; i++){
		scanf("%d %d", &price2[i], &spice2[i]);
	}
	
	int count[type];
	for (int i = 0; i < type; i++){
		count[i] = 0;	
	}
	
	for (int i = 0; i < people; i++){
		for (int j = 0; j < type; j++){
			if (price2[j] <= price1[i] && spice2[j] >= spice1[i]){
				count[j]++;
			}
		}
	}
		
	int max = 0;
	for (int i = 0; i < type; i++){
		if (max < count[i]){
			max = count[i];
		}
	}
		
	if (max == 0){
		printf("0\n");
	}
	else
	{
		for (int i = 0; i < type; i++){
			if (count[i] == max){
				printf("%d\n", i + 1);
			}
		}
	}
}