Sentence 1: Indeed, the famous port city of Nagasaki served as Japan's sole point of contact with the outside world during 260 years of self-imposed isolation.

Sentence 2: The port of Nagasaki prospered during their self-imposed isolation period.
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: Keswick makes a good base for touring the National Park and the Northwest.

Sentence 2: Keswick isn't a good base for touring the National Park.
OPTIONS:
- yes
- it is not possible to tell
- no
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Volume II will present the following appendices and may present

Sentence 2: Volume II is incomplete and needs revision.
OPTIONS:
- yes
- it is not possible to tell
- no
Is this second sentence entailed by the first?

Answer:
no