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<algorithm>
using namespace std;
int x[200][200], y[200], z[200], n, i, a, j, b;
int main() {
	while (true) {
		cin >> n; b = 0;
		if (!n) { break; }
		for (i = 1; i <= n;i++){
			cin >> z[i];
			for (j = 0; j < z[i];j++){
				cin >> x[i][j];
			}
			sort(x[i], x[i] + z[i]);
		}
		cin >> a;
		for (i = 0; i < a; i++) { cin >> y[i]; }sort(y, y + a);
		for (i = 1; i <= n; i++) {
			if (z[i] == a) {
				for (j = 0; j < z[i]; j++) {
					if (y[j] != x[i][j]) {
						goto E;
					}
				}
				a = i;b++;
			E:;
			}
		}
		if (b - 1) { a = -1; }
		cout << a << endl;
	}
}

C++: #include<bits/stdc++.h>
using namespace std;
#define all(vec) vec.begin(),vec.end()
typedef long long int ll;
typedef pair<int,int> P;
const ll MOD=1000000007LL;
const ll INF=1000000000LL;
const int MAX=100001;
int main(){
    int n;
    while(cin>>n,n){
    vector<int> p[110];
    for(int i=0;i<n;i++){
        int m;
        cin>>m;
        for(int j=0;j<m;j++){
            int pp;cin>>pp;
            p[i].push_back(pp);
        }
    }
    int k;
    cin>>k;
    vector<int> l;
    for(int j=0;j<k;j++){
        int ll;cin>>ll;
        l.push_back(ll);
    }
    int c=0;
    int ans=0;
    for(int i=0;i<n;i++){
        if(includes(all(p[i]),all(l))){
            c++;
            ans=i+1;
        }
    }
    if(c!=1){
        cout<<-1<<endl;
    }else{
        cout<<ans<<endl;
    }
    }
    return 0;
}