Anchor: PSC assembled three volunteer companies to participate in our study.
Entailed: Three companies were assembled by the PSC to participate in our study.  
Contradiction: The PSC did not assemble any companies to participate in our study.  
Contradiction: Convertibles are driving swiftly down the highway.
Contradiction: Someone walks on a wall.
Contradiction: The son is sleeping.
Contradiction: It didn't output a great deal.