Sentence 1: Many years past, Fena Dim sold brill to Fena Kef.

Sentence 2: Fena Dim sold supplies to Fena Kef.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: When the elephant has located a tiger, the mahout signals and you hop aboard his howdah to penetrate the jungle.

Sentence 2: Elephants are never used to locate tigers - instead, people use helicopters to find them.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Looks to me now, thinkin' it over, they was out to make sod fly.

Sentence 2: Now that I've thought about it, they weren't out to do anything.
Is this second sentence entailed by the first?

Answer:
no