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++: //
//  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(")
    int n, in, m, k;
    while(cin>>n,n){
        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].size()==0&&vect.size()!=0)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 >= vec[i].size()){
                        out=1;
                        break;
                    }
                }
                
                if(vect[j]<vec[i][now]||out==1)
                    break;
                if(vect[j]==vec[i][now]){
                    now++;count++;
                }
            }
            if(out==1)continue;
            if(vect[vect.size()-1]==vec[i][now-1]&&count==int(vect.size())){
                suc++;
                po = i+1;
            }
        }
        if(suc==1){
            cout<<po<<endl;
        }
        else{
            cout<< " " << -1<<endl;
        }
    }
    
    return 0;
}

C++: #include<iostream>
#include<string>
#include<vector>
#include<utility>
#include<queue>
#include<algorithm>
#include<cmath>
#include<cstdio>
#include<cstring>
#include<cstdlib>
#include<map>
#include<complex>
#define INF 2147483647
#define llINF 9223372036854775807
#define pb push_back
#define mp make_pair 
#define F first
#define S second
#define ll long long

using namespace std;
int main(){
  int n;
  while(cin>>n,n){
    vector<vector<int> >vvi(n+10);
    for(int i=0;i<n;i++){
      int m;cin>>m;
      for(int j=0;j<m;j++){
	int a;cin>>a;
	vvi[i].pb(a);
      }
    }
    int k;cin>>k;
    bool flag=true;
    int l;
    vector<int>vi;
    for(int i=0;i<k;i++){
      cin>>l;
      vi.pb(l);
    }
    int cnt=0;
    int po=-1;
    for(int i=0;i<n;i++){
      int cn=0;
      for(int j=0;j<vvi[i].size();j++){
	for(int op=0;op<vi.size();op++){
	  if(vvi[i][j]==vi[op]){
	    cn++;
	    break;
	  }
	}
      }
      if(cn==k){
	cnt++;
	po=i+1;
      }
    }
    if(cnt==1)cout<<po<<endl;
    else cout<<-1<<endl;
  }
  return 0;
}

C++: #define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <algorithm>
#include <vector>
#include <iterator>
#include <set>

using namespace std;

inline int getInt() { int s; scanf("%d", &s); return s; }

// bad knowhow
#define ALL(c) (c).begin(), (c).end()
#define REP(i,n) for(long long i=0;i<(long long)n;++i)
#define MAX_SIZE 100

set<int> g_p[MAX_SIZE];
set<int> g_leak;

int main() {
	//freopen("Text.txt", "r", stdin);
	while (true) {
		REP(i, MAX_SIZE) g_p[i].clear();
		g_leak.clear();

		const int n = getInt();
		if (n==0) break;
		
		REP(i, n) {
			const int m = getInt();
			REP(j, m) g_p[i].insert(getInt()-1);
		}

		const int k = getInt();
		REP(i, k) g_leak.insert(getInt()-1);

		vector<int> suspect;
		REP(i,n) {
			vector<int> is;
			if (includes(ALL(g_p[i]), ALL(g_leak))) suspect.push_back(i);
		}

		cout << ((suspect.size()==1) ? suspect[0] + 1 : -1) << endl;
	}
}