N = int(input())
AB = [list(map(int, input().split())) for i in range(N)]
M = int(input())
XY = [list(map(int, input().split())) for i in range(M)]
cnt = [0] * M
for i in range(N):
    A, B = AB[i]
    for j in range(M):
        X, Y = XY[j]
        if X <= A and B <= Y:
            cnt[j] += 1
maxcnt = max(cnt)
if maxcnt == 0:
    print(0)
    exit()
for i in range(M):
    if cnt[i] == maxcnt:
        print(i + 1)