Anchor: Then, for some reason--we will probably never know precisely why--the era of trilobites, triceratops, and other multicellular creatures commenced.
Entailed: For reasons we will probably never understand, the era of these creatures commenced. 
Contradiction: For obvious reasons, we know exactly why the era of triceratops, trilobites, and other creatures commenced. 
Contradiction: Fowler has a bomb.
Contradiction: The woman is not bald.
Contradiction: The structure has 4 tires on it.
Contradiction: an athlete runs outside while a crowd watches