import java.io.BufferedReader;
import java.io.FileReader;

public class alibi {
	public static void main (String[] args) throws Exception {
		BufferedReader in = new BufferedReader(new FileReader("alibi.in"));
		int K = Integer.parseInt(in.readLine());

		for (int i=1; i<=K; i++) {
			String[] line = in.readLine().split(" ");
			
			int s = Integer.parseInt(line[0]);
			int w = Integer.parseInt(line[1]);
			int p = Integer.parseInt(line[2]);
			int t = Integer.parseInt(line[3]);
			
			boolean vindicated[] = new boolean[100];		
			
			int Si[] = new int[201];
			int Pi[] = new int[201];
			int bi[] = new int[201];
			int fi[] = new int[201];
			boolean invalid[] = new boolean[201];
			
			for (int j=0; j<w; j++) {
				line = in.readLine().split(" ");
				Si[j] = Integer.parseInt(line[0]);
				Pi[j] = Integer.parseInt(line[1]);
				bi[j] = Integer.parseInt(line[2]);
				fi[j] = Integer.parseInt(line[3]);
			}
	
			for (int a=0; a<w; a++) {
				for (int b=0; b<w; b++) {
					if ((bi[a]<fi[b] && bi[a]>bi[b]) || (fi[a]>bi[b] && fi[a]<fi[b])) {
						if (Si[a] == Si[b] && Pi[a] != Pi[b]) {
							invalid[a]=true;
							invalid[b]=true;
						}
					}	
				}
			}			
	
			for (int a=0; a<w; a++) {
				if (bi[a] <= t && fi[a] >= t && !invalid[a]) vindicated[Si[a]] = true;
			}
			
			System.out.println("Data Set: " + i);
			boolean flag=true;
			for (int j=1; j<=s; j++) {
				if (vindicated[j]==false) {
					flag=false;
					System.out.println(j);
				}
			}
			if (flag) System.out.println ("No suspect.");
			System.out.println();
		}
		
	}
}