Sentence 1: They walked for a long while past huge slate boulders that collapsed centuries ago.

Sentence 2: They were walking for a long time.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: One must-see is Chowpatty Beach, not for swimming or sunbathing, but because it is one of the greatest people-watching spots in western fakirs and fakers walk on fire, sleep on nails, climb ropes in midair, or bury their heads in the sand; food vendors hawk kulfi ice cream as well as pan, betel-chew, and bhelpuri, a spicy local specialty.

Sentence 2: Most people that try bhelpuri absolutely hate how spicy it is.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: I took that liberty.

Sentence 2: I let that one slide.
Is this second sentence entailed by the first?

Answer:
no