Anchor: These techniques use models of planting decisions, yield response functions, and agricultural product supply and demand.
Entailed: The techniques deal with agriculture products demand.
Contradiction: The techniques described are only dealing with tech business outlooks.
Contradiction: Group of people in empty field.
Contradiction: There are very heavy winds.
Contradiction: Dave didn't care what he wanted him to do. 
Contradiction: A dog is in the grass