#include<bits/stdc++.h>
using namespace std;

//constant
const long long int inf = 1<<30;
const int N = 1e4+1;
const int M = 1e3+1;

//variable
int cnt_ment[M];
int a[N],b[N];
int x[M],y[M];

//function


int main()
{
    int n,m;
    cin>>n;
    for(int i=0; i<n; i++){
        cin>>a[i]>>b[i];
    }
    cin>>m;
    for(int i=0; i<m; i++){
        cin>>x[i]>>y[i];
    }

    for(int i=0; i<N; i++){
        for(int j=0; j<M; j++){
            if(a[i]>=x[j]&&b[i]<=y[j]){
                cnt_ment[j]++;
            }
        }
    }
    int ans=distance(cnt_ment,max_element(cnt_ment,&cnt_ment[m]));
    cout<<ans+1<<endl;

    /*for(int i=0; i<m; i++){
        cout<<cnt_ment[i]<<' ';
    }*/
    return 0;
}