Sentence 1: Beatrix Potter bought the tarn in 1929 and bequeathed it to the National Trust.

Sentence 2: In 1929, Beatrix Potter expressed an interest in buying the tarn, but could not do so because she could not afford to.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: I'm guessing you don't have it with you?'

Sentence 2: I bet you don't have it on you?
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: But the Stone of Destiny was returned to Scottish soil in 1996 700 years after it had been taken south by the English.

Sentence 2: The Stone of Destiny was returned by the English people in July 1996.
Is this second sentence entailed by the first?

Answer:
it is not possible to tell