#include <bits/stdc++.h>
using namespace std;
#define REP(i,a,n) for(int i=(a); i<(int)(n); i++)
#define rep(i,n) REP(i,0,n)
#define FOR(it,c) for(__typeof((c).begin()) it=(c).begin(); it!=(c).end(); ++it)
#define ALLOF(c) (c).begin(), (c).end()
typedef long long ll;
typedef unsigned long long ull;


int main(){
  int N;
  cin >> N;

  vector<vector<int>> v;
  rep(i,N){
    int A, B;
    cin >> A >> B;
    v.push_back({A, B});
  }

  int M;
  cin >> M;

  map<int,int> cnt;
  rep(i,M){
    int X, Y;
    cin >> X >> Y;
    rep(j,N){
      if(X<=v[j][0] && Y>=v[j][1]) cnt[i]++;
    }
  }

  int mx = -1;
  FOR(it,cnt){
    mx = max(mx, it->second);
  }

  if(mx == -1){
    cout << 0 << endl;
  }else{
    FOR(it,cnt){
      if(it->second == mx) cout << it->first + 1 << endl;
    }
  }
  
  return 0;
}