Anchor: Two people go down a water slide on a raft.
Entailed: The people are seated on the raft.
Contradiction: The people are sitting at the table.
Contradiction: The steel industry remained impartial as to whether imports had been sapping business.
Contradiction: Subia is very familiar with providing assistance. 
Contradiction: He never wrote a book about her.
Contradiction: Two humans are indoors.