#include <bits/stdc++.h>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<int,P> pip;
typedef vector<pip> vip;
const int inf=1<<30;
const ll INF=1ll<<50;
const double pi=acos(-1);
const double eps=1e-8;
const ll mod=1e9+7;
const int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};

int n,m;
vi a,b,c;

int main(){
	cin>>n;
	a=b=vi(n);
	for(int i=0;i<n;i++) cin>>a[i]>>b[i];
	cin>>m;
	c=vi(m);
	int M=0;
	for(int i=0;i<m;i++){
		int x,y;
		cin>>x>>y;
		for(int j=0;j<n;j++) if(x<=a[j]&&y>=b[j]) c[i]++;
		M=max(M,c[i]);
	}
	if(!M) cout<<M<<endl;
	else{
		for(int i=0;i<m;i++) if(c[i]==M) cout<<i+1<<endl;
	}
}