#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;

#define ff              first
#define ss              second
#define int             long long
#define pb              push_back
#define mp              make_pair
#define pii             pair<int,int>
#define vi              vector<int>
#define mii             map<int,int>
#define pqb             priority_queue<int>
#define pqs             priority_queue<int,vi,greater<int> >
#define setbits(x)      __builtin_popcountll(x)
#define zrobits(x)      __builtin_ctzll(x)
#define mod             1000000007
#define inf             1e18
#define ps(x,y)         fixed<<setprecision(y)<<x
#define mk(arr,n,type)  type *arr=new type[n];
#define w(x)            int x; cin>>x; while(x--)
mt19937                 rng(chrono::steady_clock::now().time_since_epoch().count());
#define fastio          ios_base::sync_with_stdio(0); cin.tie(0);
int32_t main()
{
    fastio;
    int r;cin>>r;
    for(int t=1;t<=r;t++)
    {
        int n,q,sx=0,sy=0,s2x=0,s2y=0,a,b,ans=0;cin>>n;
        for(int i=0;i<n;i++){
            cin>>a>>b;
            sx=(sx+a)%mod;sy=(sy+b)%mod;
            s2x=(s2x+((a*a)%mod) )%mod;s2y=(s2y+((b*b)%mod))%mod;
        }
        cin>>q;
        for(int i=0;i<q;i++){
            cin>>a>>b;
            ans = (ans + ((n*((a*a)%mod))%mod) + s2x -((2*((a*sx)%mod))%mod)+mod)%mod;
            ans = (ans + ((n*((b*b))%mod)%mod) + s2y -((2*((b*sy)%mod))%mod)+mod)%mod;

        }
        cout<<"Case #"<<t<<": "<<ans<<"\n";
    }
return 0;
}