package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

var sc = bufio.NewScanner(os.Stdin)

func nextInt() int {
	sc.Scan()
	i, err := strconv.Atoi(sc.Text())
	if err != nil {
		panic(err)
	}
	return i
}

func nextLine() string {
	sc.Scan()
	return sc.Text()
}

func main() {
	n := nextInt()
	var a []int
	var b []int
	for i := 0; i < n; i++ {
		co := strings.Split(nextLine(), " ")
		x, _ := strconv.Atoi(co[0])
		a = append(a, x)
		x, _ = strconv.Atoi(co[1])
		b = append(b, x)
	}
	m := nextInt()
	var x []int
	var y []int
	for i := 0; i < m; i++ {
		co := strings.Split(nextLine(), " ")
		p, _ := strconv.Atoi(co[0])
		x = append(x, p)
		p, _ = strconv.Atoi(co[1])
		y = append(y, p)
	}
	max := 0
	buy := make([]int, m)
	for i := 0; i < m; i++ {
		for k := 0; k < n; k++ {
			if x[i] <= a[k] && y[i] >= b[k] {
				buy[i]++
				if buy[i] > max {
					max = buy[i]
				}
			}
		}
	}
	if max == 0 {
		fmt.Println(0)
	} else {
		for i := 0; i < m; i++ {
			if buy[i] == max {
				fmt.Println(i + 1)
			}
		}
	}
}