Anchor: It took time for men to recognize that they did not have to promise marriage in the event of a pregnancy in exchange for sexual relations.
Entailed: Men didn't always know that they didn't have to tell women they'd marry them if they got them pregnant in order to have sex with them. 
Contradiction: Men still promise women before sleeping with them that they'll marry them if they get pregnant. 
Contradiction: That is true today. 
Contradiction: The roof offers an amazing view.
Contradiction: The old man sat on the boat.
Contradiction: Speaker talking to large crowd