#include <bits/stdc++.h>
using namespace std;
int n, k, a [850][850];
struct eee{
    string str1, str2;
};
eee z [850];
int main (){

    ifstream fin ("hub.in");
    ofstream fout ("hub.out");
    fin >> n >> k;
    int qqq = n*(n-1)/2;
    for (int i = 0; i < qqq; i ++){
        int u, v;
        fin >> u, v;
        a [u][v] = 1;
    }
    for (int i = 0; i < n; i ++) a [i][i] = 1;
    for (int i = 0; i < n; i ++){
        string str1 = "", str2 = "";
        for (int j = 0; j < n; j ++){
            if (a [i][j] == 1) str1 += char (j);
            else str2 += char (j);
        }
        z[i].str1 = str1;
        z[i].str2 = str2;
    }
    for (int i = 0; i < k; i ++){
        int p;
        fin >> p;
        string s = "";
        for (int j = 0; j < p; j ++){
            int q;
            fin >> q;
            s += char (q);
        }
        sort (s.begin(), s.end ());
        int j;
        for (j = 0; j < n; j ++){
            if (s == z [j].str1 || s == z [j].str2){
                fout << j << endl;
                break;
            }
        }
        if (j == n) fout << -1 << endl;
    }

    return 0;
}