import sys
input = sys.stdin.readline

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

M=int(input())
Q=[list(map(int,input().split())) for i in range(M)]

ANS=[0]*M

for i in range(M):
    x,y=Q[i]

    for z,w in P:
        if x<=z and y>=w:
            ANS[i]+=1

MAX=max(ANS)

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