#include <iostream>

#include <algorithm>

#include <cmath>

#include <vector>

#include <cstdio>

#include <cstring>

#pragma warning(disable:4996)

using namespace std;

int a[32][10001];

int n,q;

int main()

{

	int i,j,f,h,k,num;

	bool flag;

	memset(a,0,sizeof(0));

	while(~scanf("%d",&n))

    {

        for(i=1;i<=n;i++)

	{

		scanf("%d",&f);

		h=i%32;

		k=i/32;

		for(j=1;j<=f;j++)

		{

			scanf("%d",&num);

			a[h][num] = a[h][num]|(1<<k);

		}

	}

	scanf("%d",&q);

	for(i=1;i<=q;i++)

	{

		scanf("%d%d",&h,&k);

		flag=false;

		for(j=0;j<32;j++)

		{

			if(a[j][h]&a[j][k])

			{

				flag=true;

				break;

			}

		}

		if(flag)

			printf("Yes\n");

		else

			printf("No\n");

	}

    }

	return 0;

}