Sentence 1: The Third Republic

Sentence 2: This republic was not the first.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: Today, dozens of stalls display a wonderful ethnic you can sample everything from fresh tortillas to Chinese herbs.

Sentence 2: You won't find Chinese herbs there, they don't have them.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Then show it to me.

Sentence 2: Then prove it to me.
Is this second sentence entailed by the first?

Answer:
it is not possible to tell