#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
#define rep(i,s,e) for(int (i) = (s);(i) <= (e);(i)++)

int N;
int M;
vector<i64> X,Y;
vector<i64> A,B;

int main(){
  cin >> N;
  A.resize(N);
  B.resize(N);
  rep(i,0,N - 1){
    cin >> A[i] >> B[i];
  }
  cin >> M;
  X.resize(M);
  Y.resize(M);
  rep(i,0,M - 1){
    cin >> X[i] >> Y[i];
  }
  vector<int> ans(M,0);
  rep(i,0,N - 1){
    rep(j,0,M - 1){
      if(A[i] >= X[j] && B[i] <= Y[j])
        ans[j]++;
    }
  }

  int a = max_element(ans.begin(),ans.end()) - ans.begin();
  if(ans[a] == 0){
    cout << 0 << endl;
  }
  else{
    rep(i,0,M - 1){
      if(ans[i] == ans[a]){
        cout << i + 1 << endl;
      }
    }
  }
}