Anchor: The first European to see the Mississippi was the Spanish Conquistador Hernando de Soto, brother-in-law of Balboa and the discoverer of the Pacific.
Entailed: Hernando de Soto was the first European to set eyes on the Mississippi.
Contradiction: Hernando de Soto was a Dutch explorer who found the Pacific. 
Contradiction: Still, it was strange that he had only sent postcards in the mail.
Contradiction: A dog is on a leash
Contradiction: We will do that in just a minute.
Contradiction: A man is playing the guitar.