Sentence 1: You have tied him up well, hein?

Sentence 2: After tying the man up, the torture proceeded.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: But, seeing it was Mr. Inglethorp of the Hall, I thought there was no harm in it.

Sentence 2: Since it was Mr. Inglethorp asking, I thought it would be okay to do as he asked.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: Look for scenes of boats sailing on the Nile, and weapons of war including spears and shields.

Sentence 2: Boats were popular in that time.
Is this second sentence entailed by the first?

Answer:
it is not possible to tell