Anchor: Legend claims that the city of Byzantium was founded around 660 b.c. by a Greek named Byzas, after the Delphic Oracle had bidden him to build his city  opposite the Land of the Blind.  
Entailed: Around 660 b.c. , according to the legend, the city of Byzantium was founded by a Grek named Byzas.
Contradiction: Legend claims that the city of Byzantium was founded around 999 b.c.
Contradiction: a dog sleeping on a couch
Contradiction: A bicyclist navigating through a busy city street.
Contradiction: A flock of penguins waddle off to dive into the ocean.
Contradiction: a man is holding a purchased item