Anchor: Cummins built and tested 12 engineering concept prototype engines for its Signature 600 engine, a new concept, 600 horsepower,
Entailed: The Signature 600 was a new concept engine with 600 horsepower.
Contradiction: Cummins did not build any prototypes when developing the Signature 600 engine.
Contradiction: Himeji's castle is overrated and not worth seeing.
Contradiction: There are children playing soccer.
Contradiction: Nobody is walking.
Contradiction: A dog is running.