Sentence 1: On the island's west side, the Fontana Aretusa is a freshwater spring (just steps from the ocean) with black-and-white ducks swimming in its semi-circular papyrus pond.

Sentence 2: There are no freshwater springs located anywhere on the island.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: is that new

Sentence 2: Was that made recently?
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: Some critics describe the top-rated drama's live broadcast as a welcome throwback to 1950s television.

Sentence 2: Critics were harsh in their reception of the drama's live broadcast.
Is this second sentence entailed by the first?

Answer:
no