n = int(input())
AB = [list(map(int, input().split())) for _ in range(n)]
m = int(input())
XY = [list(map(int, input().split())) for _ in range(m)]

N = [0 for _ in range(m)]
for i in range(n):
    a, b = AB[i]
    for j in range(m):
        x, y = XY[j]
        if x <= a and y >= b:
            N[j] += 1
max_n = max(N)
if max_n == 0:
    print(0)
    exit()
for i in range(m):
    if N[i] == max_n:
        print(i + 1)