Anchor: of uh of casual speech uh in an attempt to get some kin d of a model of what speech is like
Entailed: Casual speech can help in obtaining a model of what speech is like.
Contradiction: We only look at formal speech because a casual speech model would be useless.
Contradiction: Young people are wrestling each other.
Contradiction: It's still true that the developing world continues to develop. 
Contradiction: A man is flying a plane.
Contradiction: I think all the arteries are open and everything is flowing through.