Three young men , two riding a motorbike on a busy street , looking at something and smiling .
It is probably the case that three young men are watching a sidewalk musician on a crowded city street .
It is probably not the case that three young men are watching a sidewalk musician on a crowded city street .
It is probably the case that three young men are watching a sidewalk musician on a crowded city street .
Three young men are watching a sidewalk musician on a crowded city street .