Anchor: Under the circumstances, I am afraid an inquest can hardly be avoided, these formalities are necessary, but I beg that you won't distress yourselves. 
Entailed: An inquiry can't be avoided. 
Contradiction: Inquiry could be avoided. 
Contradiction: I'm in high school and I want to major in chemistry.
Contradiction: President Eisenhower enjoyed playing golf quite a bit.
Contradiction: There is a man swimming in the pool.
Contradiction: A trio perform a song.