Sentence 1: That's a question about politics, not economics, so maybe it's best directed to a different sort of expert.

Sentence 2: The question should be redirected to one knowing politics.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: On the west coast the best beaches are at the island resorts of Penang and Langkawi.

Sentence 2: The west coast consists of sheer rocky cliffs with no beaches to speak of.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: So we sit." He spat on the ground.

Sentence 2: The man spat on the ground.
Is this second sentence entailed by the first?

Answer:
yes