Anchor: On the other hand, supporters of those scenarios point to economic analyses showing that the assumed investments can pay for themselves over time.
Entailed: They wanted to show that it could be a valid investment but it needed time.
Contradiction: They were scared it would never make it worthwhile. 
Contradiction: So what if they did away with tax altogether and people could pollute as much as they wanted to?
Contradiction: A kid combining things.
Contradiction: the man was baking cake
Contradiction: A dog with Frisbee in mouth jumps over a man.