n = int(input())

mb = []
for i in range(n):
    a,b = map(int,input().split())
    mb.append([a,b])
    
m = int(input())

c = []
for i in range(m):
    x,y = map(int,input().split())
    c.append([x,y])

l = []
for i in range(m):
    cnt = 0
    for j in range(n):
        if c[i][0] <= mb[j][0] and c[i][1] >= mb[j][1]:
            cnt += 1
    l.append(cnt)

if max(l) == 0:
    print(0)
else:
    for i in range(len(l)):
        if l[i] == max(l):
            print(i+1)