Anchor: They lack the nerd's enterprise and obsessivesness.
Entailed: They don't have the same enterprise and obsessiveness.
Contradiction: They have just as much enterprise and obsessiveness as the nerd
Contradiction: A homeless lady sleeps under a bridge.
Contradiction: Teenagers playing a console.
Contradiction: Both boys are screaming and crying.
Contradiction: Many doctors believe testing for blood alcohol is not beneficial.