Anchor: In short, its gravitational potential was high and the ship's Calculator was a run-of-the-mill model not designed to plot landing trajectories at that potential range.
Entailed: The ship's calculator was not the best model available. 
Contradiction: The ship's calculator could correctly plot any landing trajectory. 
Contradiction: The Nevada Arts Council only promotes their ballet performances.
Contradiction: Two woman using the restroom.
Contradiction: What is last one you wrote. 
Contradiction: The independent prosecutor's office is run by someone from the opposing party.