n = int(input())
ab = [list(map(int,input().split())) for _ in range(n)]
m = int(input())
cnt = [0]*m
for _ in range(m):
    x,y = map(int,input().split())
    c = 0
    for a,b in ab:
        if x <= a and y >= b: c += 1
    cnt[_] = c
v = max(cnt)
if v == 0:
    print(0)
else:
    for i in range(m):
        if cnt[i]==v: print(i+1)