Anchor: Bottom line -- we just don't know how to do that, Corbett said. 
Entailed: The bottom line is we do not know how.
Contradiction: They know how to do it.
Contradiction: All of the flights have been cancelled.
Contradiction: It's also.
Contradiction: A man swimming in the pool.
Contradiction: There are some who believe that reason and faith are simply differing approaches to gaining knowledge and understanding.