Sentence 1: Near the school you'll see all that's left of the town's original wall, the Puerta de la Olma (Elm Tree Gate).

Sentence 2: The rest of the wall was torn down but kept a small section intact.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Marcel Preest spent many summers at its splendid Grand Hotel, where he wrote part of his A la Recherche du Temps Perdu.

Sentence 2: Marcella Preest was a famous female writer.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Visitors can see dolphins being trained and fed every two hours from 10:00 a.m. to 4:00 p.m.

Sentence 2: There are no dolphins to visit.
Is this second sentence entailed by the first?

Answer:
no