Anchor: Obviously, evolutionary psychology hasn't yet come close to finding the Holy Grail.
Entailed: Evolutionary Psychology has elusive underpinnings.
Contradiction: Evolutionary Psychology is well understood and few mysteries, if any, remain.
Contradiction: two people riding on a bus.
Contradiction: Two dogs are in a yard.
Contradiction: Emperor Nero was killed in battle in the year a.d. 54. 
Contradiction: Youngsters are conversing and learning new things in class.