Sentence 1: At the top end of the lake, you wander into dense forest through a fantastic chaos of rocks and grottos that according to local tradition are variously inhabited by the Devil and King Arthur himself.

Sentence 2: King Arthur and the Devil are happily married and make their home in the dense forest.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Mademoiselle Cynthia was not at lunch to-day?

Sentence 2: Cynthia must have excused herself to the lavatory earlier.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: GAO will do work without a written request only if the work involves limited technical assistance that can be completed within 5 staff days, such as providing briefings on prior work or readily available information.

Sentence 2: GAO feels that this is the solution that's most considerate to staff.
Is this second sentence entailed by the first?

Answer:
it is not possible to tell