using Microsoft.SqlServer.Server;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Data.Odbc;
using System.IO;
using System.IO.Pipes;
using System.Linq;
using System.Runtime.InteropServices;
using System.Threading;

namespace yukicoderTest
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int[,] memberDesired = new int[n, 2];
            for (int i = 0; i < n; i++)
            {
                string[] desired = Console.ReadLine().Split(' ');
                memberDesired[i,0] = int.Parse(desired[0]);
                memberDesired[i, 1] = int.Parse(desired[1]);
            }
            int m = int.Parse(Console.ReadLine());
            int[] purchase = new int[m];
            for(int i = 0; i < m; i++)
            {
                string[] sales = Console.ReadLine().Split(' ');
                purchase[i] = ApplicantFinding(int.Parse(sales[0]), int.Parse(sales[1]), memberDesired);
            }
            int max = purchase.Max();
            if (max != 0) {
                for (int i = 0; i < m; i++)
                {
                    if (max == purchase[i]) {
                        Console.WriteLine(i + 1);
                    }
                }
            }
            else
            {
                Console.WriteLine(0);
            }
        }

        private static int ApplicantFinding(int price, int spicy, int[,] memberDesired)
        {
            int count = 0;
            for(int i = 0; i < memberDesired.Length/2; i++)
            {
                if(price <= memberDesired[i,0] &&  spicy >= memberDesired[i, 1])
                {
                    count++;
                }
            }
            return count;
        }
    }
}