Anchor: The 4 guys were rollerskating and blading a conga line in the outdoor staking rink with many other people on the sunny day.
Entailed: 4 guys are rollerskating.
Contradiction: The men lazily float down the river in a canoe towards their fishing hole.
Contradiction: The 4 guys were skating by themselves, each doing their own things.
Contradiction: 4 brothers are playing football.
Contradiction: A person indoors, watching tv.
Contradiction: It was raining.