n = int(input())
pab = [list(map(int, input().split())) for i in range(n)]
m = int(input())
pxy = [list(map(int, input().split())) for i in range(m)]
pc = [0 for i in range(m)]
for j in range(m):
    for a,b in pab:
        if a >= pxy[j][0] and b <= pxy[j][1]:
            pc[j] += 1
cMax = max(pc)

if cMax == 0:
    print(0)
else:
    for i in range(m):
        if pc[i] == cMax:
            print(i + 1)