The cat eats the dog. The cow eats the dog. The dog chases the cow. The tiger needs the cat. If someone needs the dog then the dog needs the cow. If someone is blue then they eat the cow. If the cow eats the cat and the cow needs the tiger then the cow is big.
The dog does not need the cow.
@0: The cat eats the dog.[(triple1)] The cow eats the dog.[(triple2)] The dog chases the cow.[(triple3)] The tiger needs the cat.[(triple4)]