n=int(input())
l=[list(map(int,input().split())) for i in range(n)]
m=int(input())
c=[0]*m


for i in range(m):
    p,s=map(int,input().split())
    t=0
    for j in range(n):
        if p<=l[j][0] and s>=l[j][1]:
            t+=1
    c[i]=t

if sum(c)==0:
    print(0)
else:
    for i in range(m):
        if c[i]==max(c):
            print(i+1)