#include <iostream>

struct Mentai
{
    int Price;
    int Hot;
};

int main()
{
    int n, m;
    int *bought;
    Mentai *member;
    Mentai *mentai;
    
    std::cin >> n;
    member = new Mentai[n];
    
    for(int i = 0; i < n; i++)
    {
        std::cin >> member[i].Price >> member[i].Hot;
    }
    
    std::cin >> m;
    mentai = new Mentai[m];
    bought = new int[m];
    
    for(int i = 0; i < m; i++)
    {
        std::cin >> mentai[i].Price >> mentai[i].Hot;
        bought[i] = 0;
    }
    
    
    int max = 0;
    
    for(int i = 0; i < n; i++)
    {
        for(int j = 0; j < m; j++)
        {
            if((member[i].Price <= mentai[j].Price) && (member[i].Hot >= mentai[j].Hot))
            {
                bought[j]++;
                
                if(bought[j] > max)
                {
                    max = bought[j];
                }
            }
        }
    }
    
    if(max == 0)
    {
        std::cout << "0" << std::endl;
    }
    else
    {
        for(int i = 0; i < m; i++)
        {
            if(bought[i] == max)
                std::cout << (i + 1) << std::endl;
        }
    }
    
    return 0;
}