Anchor: Natural selection is a resourceful tinkerer and could have rewired men's brains to respond to lowered testosterone in any number of ways, not necessarily by becoming less competitive.
Entailed: Natural selection might have made men's brains respond to lowered testosterone.  
Contradiction: It is not likely that natural selection had anything to do with men's brains responses to low testosterone.  
Contradiction: Medicaid is the only program they operate.
Contradiction: A man in red stood up to speak.
Contradiction: Abraham was the third patriarch. 
Contradiction: It's quite narrow and a Scottish suspension bridge lies across it.