#include <iostream>
#include <stdio.h>
using namespace std;

int num, cat, mouse;
int catDoors[105][105];
int catDoorsNum[105] = {0};
int mouseDoors[105][105];
int mouseDoorsNum[105] = {0};
bool mouseDoorsMtx[105][105] = {0};

void init(){
	for(int i = 1; i <= num; i++) catDoorsNum[i]=0;
	for(int i = 1; i <= num; i++) mouseDoorsNum[i] = 0;
	for(int i = 1; i <= num; i++)
		for(int j = 1; j <= num; j++)
			mouseDoorsMtx[i][j] = 0;
}

void dfs(int cm, bool *used, bool isCat){
	if(isCat){
		used[cm] = 1;
		for(int i = 0; i < catDoorsNum[cm]; i++){
			if(!used[catDoors[cm][i]]){
				dfs(catDoors[cm][i], used, 1);
			}
		}
	}
	else{
		used[cm] = 1;
		for(int i = 0; i < mouseDoorsNum[cm]; i++){
			if(!mouseDoorsMtx[cm][mouseDoors[cm][i]]) continue;
			if(!used[mouseDoors[cm][i]]){
				dfs(mouseDoors[cm][i], used, 0);
			}
		}
	}
}

int main() {
	int t;
	scanf("%d", &t);
	for(int ii = 0; ii < t; ii++){

		scanf("%d%d%d", &num, &cat, &mouse);
		init();
		while(1){
			int from, to;
			scanf("%d%d", &from, &to);
			if(from == -1) break;
			catDoors[from][catDoorsNum[from]] = to;
			catDoorsNum[from]++;
		}
		while(1){
			int from, to;
			scanf("%d%d", &from, &to);
			if(from == -1) break;
			mouseDoors[from][mouseDoorsNum[from]] = to;
			mouseDoorsNum[from]++;
			mouseDoorsMtx[from][to] = 1;
		}
		bool catUsed[105] = {0};
		bool mouseUsed[105] = {0};
		dfs(cat, catUsed, 1);
		dfs(mouse, mouseUsed, 0);
		bool xy = 0;
		for(int i = 1; i <= num; i++){
			if(catUsed[i] && mouseUsed[i]){
				xy = 1;
				break;
			}
		}
		if(xy) printf("Y ");
		else printf("N ");
		if(catUsed[mouse]){
			printf("N\n");
			continue;
		}
		for(int i = 1; i <= num; i++){
			for(int j = 0; j < mouseDoorsNum[i]; j++){
				if(catUsed[i] || catUsed[mouseDoors[i][j]]){
					mouseDoorsMtx[i][mouseDoors[i][j]] = 0;
				}
			}
		}
		bool msUsed[105] = {0};
		dfs(mouse, msUsed, 0);
		bool ky = 0;
		for(int i = 1; i <= num; i++){
			if(i == mouse) continue;
			if(msUsed[i] && mouseDoorsMtx[i][mouse]){
				ky = 1;
				break;
			}
		}
		if(ky) printf("Y\n");
		else printf("N\n");
	}
	return 0;
}