Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func main() {
	io := NewIo()
	defer io.Flush()

	for {
		N := io.NextInt()
		if N == 0 {
			break
		}
		set := make([]map[int]struct{}, N)
		for i := 0; i < N; i++ {
			set[i] = make(map[int]struct{})
			M := io.NextInt()
			for j := 0; j < M; j++ {
				p := io.NextInt()
				set[i][p] = struct{}{}
			}
		}
		K := io.NextInt()
		l := make([]int, K)
		for i := 0; i < K; i++ {
			l[i] = io.NextInt()
		}

		ans := 0
	FOR_OUTER:
		for i := 0; i < N; i++ {
			for j := 0; j < K; j++ {
				if _, f := set[i][l[j]]; f == false {
					continue FOR_OUTER
				}
			}
			switch ans {
			case 0:
				ans = i + 1
			default:
				ans = -1
			}
		}
		if ans > 0 {
			io.Println(ans)
		} else {
			io.Println(-1)
		}
	}
}

// I/O template
type Io struct {
	reader    *bufio.Reader
	writer    *bufio.Writer
	tokens    []string
	nextToken int
}

func NewIo() *Io {
	return &Io{
		reader: bufio.NewReader(os.Stdin),
		writer: bufio.NewWriter(os.Stdout),
	}
}

func (io *Io) Flush() {
	err := io.writer.Flush()
	if err != nil {
		panic(err)
	}
}

func (io *Io) NextLine() string {
	var buff []byte
	for {
		line, isPrefix, err := io.reader.ReadLine()
		if err != nil {
			panic(err)
		}
		buff = append(buff, line...)
		if !isPrefix {
			break
		}
	}
	return string(buff)
}

func (io *Io) Next() string {
	for io.nextToken >= len(io.tokens) {
		line := io.NextLine()
		io.tokens = strings.Fields(line)
		io.nextToken = 0
	}
	s := io.tokens[io.nextToken]
	io.nextToken++
	return s
}

func (io *Io) NextInt() int {
	i, err := strconv.Atoi(io.Next())
	if err != nil {
		panic(err)
	}
	return i
}

func (io *Io) NextFloat() float64 {
	i, err := strconv.ParseFloat(io.Next(), 64)
	if err != nil {
		panic(err)
	}
	return i
}

func (io *Io) Println(a ...interface{}) {
	fmt.Fprintln(io.writer, a...)
}

func (io *Io) Printf(format string, a ...interface{}) {
	fmt.Fprintf(io.writer, format, a...)
}

func (io *Io) PrintIntSlice(a []int) {
	b := []interface{}{}
	for _, x := range a {
		b = append(b, x)
	}
	io.Println(b...)
}

func (io *Io) PrintStringSlice(a []string) {
	b := []interface{}{}
	for _, x := range a {
		b = append(b, x)
	}
	io.Println(b...)
}

func Log(name string, value interface{}) {
	fmt.Fprintf(os.Stderr, "%s=%+v\n", name, value)
}

func ExampleIo() {
	io := NewIo()
	defer io.Flush()
	a := make([]int, 0, 3)
	a[0], a[1], a[2] = io.NextInt(), io.NextInt(), io.NextInt()
	io.Println(a)
	io.PrintIntSlice(a)
	Log("io", a)
}

C++: #include <iostream>
#include <iomanip>
#include <cstdio>
#include <string>
#include <cstring>
#include <deque>
#include <list>
#include <queue>
#include <stack>
#include <vector>
#include <utility>
#include <algorithm>
#include <map>
#include <set>
#include <complex>
#include <cmath>
#include <limits>
#include <climits>
#include <ctime>
#include <cassert>
using namespace std;
 
#define rep(i,a,n) for(int (i)=(a); (i)<(n); (i)++)
#define repq(i,a,n) for(int (i)=(a); (i)<=(n); (i)++)
#define repr(i,a,n) for(int (i)=(a); (i)>=(n); (i)--)
#define all(v) begin(v), end(v)
#define pb(a) push_back(a)
#define fr first
#define sc second
#define INF 2000000000
#define int long long int
 
#define X real()
#define Y imag()
#define EPS (1e-10)
#define EQ(a,b) (abs((a) - (b)) < EPS)
#define EQV(a,b) ( EQ((a).X, (b).X) && EQ((a).Y, (b).Y) )
#define LE(n, m) ((n) < (m) + EPS)
#define LEQ(n, m) ((n) <= (m) + EPS)
#define GE(n, m) ((n) + EPS > (m))
#define GEQ(n, m) ((n) + EPS >= (m))
 
typedef vector<int> VI;
typedef vector<VI> MAT;
typedef pair<int, int> pii;
typedef long long ll;
 
typedef complex<double> P;
typedef pair<P, P> L;
typedef pair<P, double> C;
 
int dy[]={0, 0, 1, -1};
int dx[]={1, -1, 0, 0};
int const MOD = 1000000007;
 
namespace std {
    bool operator<(const P& a, const P& b) {
        return a.X != b.X ? a.X < b.X : a.Y < b.Y;
    }
}

signed main() {
    int n;
    while(cin >> n, n) {
        int m, inp;
        vector<int> p[110];
        rep(i,0,n) {
            cin >> m;
            rep(j,0,m) {
                cin >> inp;
                p[i].pb(inp);
            }
            sort(p[i].begin(), p[i].end());
        }
        int k; cin >> k;
        vector<int> l(k);
        rep(i,0,k) cin >> l[i];
        sort(l.begin(), l.end());
        
        int ans = -1;
        bool ok = true;
        rep(i,0,n) {
            int cnt = 0;
            rep(x,0,p[i].size()) {
                rep(j,0,k) {
                    if(p[i][x] == l[j]) cnt++;
                }
            }
            if(cnt == k) {
                if(ans == -1) ans = i+1;
                else ok = false;
            }
        }
        if(!ok) cout << -1 << endl;
        else cout << ans << endl;
    }
    return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
  int n;
  while(cin>>n&&n){
    int m,p[100][100]={},t;
    for(int i=0;i<n;i++){
      cin>>m;
      for(int j=0;j<m;j++)cin>>t,p[i][t]=1;
    }
    int k,l[100],an,c=0;
    cin>>k;
    for(int i=0;i<k;i++)cin>>l[i];
    for(int i=0;i<n;i++){
      bool f=1;
      for(int j=0;j<k;j++){
	if(!p[i][l[j]])f=0;
      }
      if(f)an=i,c++;
    }
    if(c!=1)an=-2;
    cout<<an+1<<endl;
  }
  return 0;
}

C++: //
//  main.cpp
//  c
//
//  Created by 13B10694 on 2015/06/01.
//  Copyright (c) 2015????´ 13B10694. All rights reserved.
//

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

vector< vector<int> > vec;
vector<int> vect;
int main(int argc, const char * argv[]) {
    //freopen("/Users/shitian/Downloads/in.txt", "r", stdin);
    int n, in, m, k;
    while(cin>>n){
        if(n==0)break;
        vec.clear();
        vect.clear();
        for(int i=0;i<n;i++){
            cin>>m;
            vector<int> tem;
            for(int j=0;j<m;j++){
                cin>>in;
                tem.push_back(in);
            }
            sort(tem.begin(),tem.end());
            vec.push_back(tem);
        }
        cin>>k;
        for(int i=0;i<k;i++){
            cin>>in;
            vect.push_back(in);
        }
        sort(vect.begin(),vect.end());
        int suc=0,po=-1;
        for(int i=0;i<vec.size();i++){
            
            if(vec[i].empty() && !vect.empty())continue;
            int now=0;
            int j;int out =0,count=0;
            for(j=0;j<vect.size();j++){
                
                while(vect[j]>vec[i][now]){
                    now++;
                    if(now >= (int)vec[i].size()){
                        out=1;
                        break;
                    }
                }
                
                if(vect[j]<vec[i][now]||out==1)
                    break;
                if(vect[j]==vec[i][now]){
                    now++;count++;
                }
            }
            // cout<<"out:  "<<out<<"     count:  "<<count<<endl;
            if(out==1){continue;}
            //cout<<"out:  "<<out<<"     count:  "<<count<<endl;
            
            // if(vect[vect.size()-1]==vec[i][now-1]&&count==(int)vect.size()){
            if((int)vect.size() == count) {
                suc++;
                po = i+1;
                //                cout<<"out: "<<out<<endl;
                //                      cout << "=======" << i << endl;
                //                      cout<<out<<endl;
                //                      for(int j=0; j<vec[i].size(); j++) cout << vec[i][j] << " ";
                //                      cout << endl;
                //                      for(int j=0; j<vect.size(); j++) cout << vect[j] << " ";
                //                      cout << endl;
                
            }
        }
        int fai= -1;
        if(suc==1){
            cout<< po <<endl;
        }
        else{
            cout << -1 <<endl;
        }
        
    }
    
    return 0;
}