using System.Linq;
using System.Collections.Generic;
using System;

public class P
{
    public int x { get; set; }
    public int y { get; set; }
    public int id { get; set; }
}

public class Hello
{
    public static void Main()
    {
        var n = int.Parse(Console.ReadLine().Trim());
        var a = new int[n, 2];
        for (int i = 0; i < n; i++)
        {
            string[] line = Console.ReadLine().Trim().Split(' ');
            a[i, 0] = int.Parse(line[0]);
            a[i, 1] = int.Parse(line[1]);
        }
        var m = int.Parse(Console.ReadLine().Trim());
        var ps = new P[m];
        for (int i = 0; i < m; i++)
        {
            string[] line = Console.ReadLine().Trim().Split(' ');
            var x = int.Parse(line[0]);
            var y = int.Parse(line[1]);
            ps[i] = new P { id = i, x = x, y = y };
        }
        var ps2 = ps.OrderBy(z => z.x).ToArray();
        printAns(a, ps2);
    }
    public static void printAns(int[,] a, P[] b)
    {
        var ans = new List<int>();
        var n = a.GetLength(0);
        var m = b.Length;
        var buy = new int[m];
        var max = 0;
        for (int i = 0; i < n; i++)
            for (int j = 0; j < m; j++)
            {
                if (b[j].x > a[i, 0]) break;
                if (b[j].y >= a[i, 1]) { buy[b[j].id]++; max = Math.Max(max, buy[b[j].id]); }
            }
        if (max == 0) { Console.WriteLine(0); return; }
        for (int i = 0; i < m; i++)
            if (buy[i] == max) Console.WriteLine(i + 1);
    }
}