N = int(input())
l = [tuple(map(int, input().split())) for i in range(N)]


M = int(input())
l1 = [tuple(map(int, input().split())) for i in range(M)]
ans = [0 for i in range(M)]

for i,(A, B) in enumerate(l):
    for j, (X, Y) in enumerate(l1):
        if X <= A and Y >= B:
            ans[j] += 1

K = max(ans)

if K == 0:
    print(0)
else:
    for i in range(M):
        if K == ans[i]:
            print(i + 1)