import java.io.*;
import java.math.*;
import java.lang.*;

public class program
{
    public static void main(String[] args) { try {new program();} catch (Exception e){e.printStackTrace();} }

    public program() throws Exception
    {
        BufferedReader br = new BufferedReader(new FileReader(new File("winner.in")));
        int dataSets = Integer.parseInt(br.readLine());
        for (int dataSet = 0; dataSet < dataSets; dataSet++)
        {
            System.out.println("Data Set " + (dataSet + 1) + ":");
            String nums[] = br.readLine().split(" ");
            int numCands = Integer.parseInt(nums[0]), numRaces = Integer.parseInt(nums[1]), numVoters = Integer.parseInt(nums[2]);
            //numCands, numRaces, numVoters
            //following are indexed by their candidate number
            String candList[] = new String[numCands];
            int raceList[] = new int[numCands];
            int voteList[] = new int[numCands];
            for (int candNum = 0; candNum < numCands; candNum++)
            {
                String inputs[] = br.readLine().split(" ");
                raceList[candNum] = Integer.parseInt(inputs[0])-1;
                candList[candNum] = inputs[1];
                for (int i=2;i<inputs.length;i++)
                    candList[candNum]=candList[candNum]+" "+inputs[i];
            }

            for (int candNum = 0; candNum < numCands; candNum++)
                voteList[candNum]=0; //give each cand 0 votes
            for (int voteNum = 0; voteNum < numVoters; voteNum++)
            {
                String voteCard = br.readLine();
                if (checkValid(voteCard, raceList, numRaces))
                    countVotes(voteCard, voteList);
                else {/*System.out.println("invalid");*/}
            }

            int maxVoteList[] = new int[numRaces];
            for (int raceNum = 0; raceNum < numRaces; raceNum++)
            {
                maxVoteList[raceNum] = findMaxVotes(raceNum,numRaces,numCands,raceList,voteList);
                //System.out.println(findMaxVotes(raceNum,numRaces,numCands,raceList,voteList));
//                printWinner(findMaxVotes(raceNum,numRaces,numCands,raceList,voteList),
//                            raceNum,numCands,candList,raceList, voteList);
            }
            for (int candNum = 0; candNum < numCands; candNum++)
                if (voteList[candNum] == maxVoteList[raceList[candNum]])
                    System.out.println(candList[candNum]);
        }
    }

    public void printWinner(int maxVotes,int raceNum,int numCands,String[] candList,int[] raceList, int[] voteList)
    {
        for (int candNum = 0; candNum < numCands; candNum++)
        {
            if (raceList[candNum] == raceNum)
                if (voteList[candNum] == maxVotes)
                    System.out.println(candList[candNum]);
        }
    }

    public boolean checkValid(String voteCard, int raceList[], int numRaces)
    {
        boolean raceVoted[] = new boolean[numRaces];
        int votedIn;
        for (int i=0;i<numRaces;i++)
            raceVoted[i]=false;
        for (int j=0;j<voteCard.length();j++)
        {
            if (voteCard.charAt(j) == 'x')
            {
                votedIn = raceList[j];
                if (raceVoted[votedIn]==false)
                    raceVoted[votedIn]=true;
                else
                    return false;
            }
        }
        return true;
    }

    public int findMaxVotes(int raceNum,int numRaces, int numCands, int raceList[],int voteList[])
    {
        int maxVotes = 0;
        for (int candNum = 0; candNum < numCands; candNum++)
        {
            if (raceList[candNum] == raceNum)
                if (voteList[candNum] > maxVotes)
                    maxVotes = voteList[candNum];
        }
        return maxVotes;
    }

    public void countVotes(String voteCard, int voteList[])
    {
        for (int j=0;j<voteCard.length();j++)
        {
            if (voteCard.charAt(j) == 'x')
                voteList[j]++;
        }
    }
}