Sentence 1: They're a good buy on the island, and prices do not vary much from shop to shop.

Sentence 2: There are five shops on the island but only three carry them.
OPTIONS:
- yes
- it is not possible to tell
- no
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Still, Yardley's book has value as a study of just how small and brief and enigmatic certain writers' lives can be once you've subtracted their work from the equation.

Sentence 2: Yardley led a very quiet and enigmatic life outside of his work as a writer.
OPTIONS:
- yes
- it is not possible to tell
- no
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: Pa was in th' Rangers, an' he had this run-in with some Comanches "Anse's eyes were suddenly bleak, and Drew remembered the few stark sentences the Texan had once spoken to explain his reason for being in the army a return to a frontier ranch to find nothing left, nothing he wanted to remember, after the Comanches had swept across the countryside.

Sentence 2: Drew was remembering what the Texan had said for his reasons to be in the army.
OPTIONS:
- yes
- it is not possible to tell
- no
Is this second sentence entailed by the first?

Answer:
yes