Anchor: After six days of eyeball-to-eyeball challenge (now known in the US as the Cuban Missile Crisis ), the potential nuclear disaster was averted when Khrushchev backed down in return for a US promise never to invade Cuba.
Entailed: There was a Cuban Missile Crisis that lasted for six days.
Contradiction: There was a Cuban Missile Crisis that lasted for four days.
Contradiction: A man is throwing the football.
Contradiction: A man gets a haircut.
Contradiction: No one is riding a bike.
Contradiction: He actually joined the military, at the very least.