Sentence 1: The modern town sits on the east bank of the Nile some 800 km (500 miles) from Cairo.

Sentence 2: There are no modern towns on the Nile River.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Not to agree to an unsettling and impossible trade, but to judge their real purposes.

Sentence 2: They agreed to the trade right away.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: The Apaches, they do not touch a man they believe insane, and Amos has many peculiarities: peculiarities of dress, of speech, of action.

Sentence 2: Amos was a peculiar man.
Is this second sentence entailed by the first?

Answer:
yes