Anchor: A couple of guys on a stage, one is playing a instrument while the other two are standing around.
Entailed: Some men are one a stage.
Contradiction: A group of guys are dancing in a ball room.
Contradiction: The cost never exceeds $200 an hour.
Contradiction: There are people playing.
Contradiction: I never lived in Abilene at all.  
Contradiction: English roast lunch or dinner is a unique experience.