Anchor: But you have to admire Merrill's  Any old Alley opportunist can write a novelty Italian song (That's Amore) or a novelty mambo song (Papa Loves Mambo), but to write a novelty song about Italians doing the mambo--that takes 
Entailed: To write a novetly song about Italians doing the mambo-- that takes something else, but you have to admire Merrill's Any old Alley opportunist can write a novelty Italian song (That's Amore) or a novelty mambo song (Papa Loves Mambo).
Contradiction: You don't have to admire that Merrill's Any old Alley opportunist can write a novelty Italian song--it's a very simple thing to do.
Contradiction: Others think total future cost is the end goal.
Contradiction: The cavemen learned many ways to survive, starting from hunting animals to eventually learning to grow crops. 
Contradiction: There are two people leaning on a fence in Chicago in July.
Contradiction: The motive for profit doesn't exist.