Anchor: But like most selfless impulses, I thought about it for a while and the feeling eventually passed.
Entailed: The selfless impulse passed after I waited for a while.
Contradiction: I acted selflessly on impulse. 
Contradiction: The woman fell off the bike and crashed into a tree
Contradiction: The child is outdoors.
Contradiction: There is lots of smoke in the air.
Contradiction: A white man is standing outside.