Anchor: Auditors should use a cost model to provide general estimates and not precise figures.
Entailed: General estimates are preferred over precise figures. 
Contradiction: Auditors do not use a cost model for providing estimates.
Contradiction: A man drove the car in a race.
Contradiction: A man is wearing a shirt that reads "Mambo".
Contradiction: Three females are walking across a field.
Contradiction: The problem is right there.