Sentence 1: We do not fear the forces of nature as much as our species once did, because we understand those forces better.

Sentence 2: Religion became a popular way to mitigate the fear caused by the mystery of the forces of nature.
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: I think not!

Sentence 2: I do not think so.
OPTIONS:
- yes
- it is not possible to tell
- no
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: More and more ports were opened to foreign trade, and the Japanese were obliged to accept low import tariffs.

Sentence 2: The Japanese were obliged to accept low import tariffs after more ports were opened to foreign trade.
OPTIONS:
- yes
- it is not possible to tell
- no
Is this second sentence entailed by the first?

Answer:
yes