Anchor: He arrived at a convenient time in the tobacco  He had no strong feelings about the evil weed, and he became the tobacco scourge only when Republican leaders asked him to shepherd the bill through the Senate.
Entailed: He didn't really care about tobacco, until he was asked to shepherd a bill through the Senate.
Contradiction: He hated tobacco from day one.
Contradiction: We have desire to attend. 
Contradiction: Cyclists are talking to each other
Contradiction: Today was bad.
Contradiction: Two men are attending class.