#include<bits/stdc++.h>
using namespace std;
using Int = long long;
//INSERT ABOVE HERE
signed main(){
  Int n;
  cin>>n;
  vector<Int> a(n),b(n);
  for(Int i=0;i<n;i++) cin>>a[i]>>b[i];
  Int cnt=0;
  set<Int> ans;
  Int m;
  cin>>m;
  for(Int i=0;i<m;i++){
    Int x,y;
    cin>>x>>y;
    Int tmp=0;
    for(Int j=0;j<n;j++)
      if(x<=a[j]&&b[j]<=y) tmp++;
    
    if(!tmp) continue;
    if(tmp>cnt) cnt=tmp,ans.clear();
    if(tmp==cnt) ans.emplace(i);
  }
  
  

  if(ans.empty()){
    cout<<0<<endl;
    return 0;
  }
  for(Int x:ans) cout<<x+1<<endl;
  return 0;
}