Sentence 1: we got about eighteen miles a gallon

Sentence 2: We have not got eighteen miles a gallon
Is this second sentence entailed by the first?

Answer: no

Sentence 1: yeah how about Mister Rogers is he still around

Sentence 2: Is Sesame Street still around?
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Jon removed his merchant's tunic and pulled on a grimy brown tunic from his pack to replace it.

Sentence 2: Jon kept his merchant's tunic on.
Is this second sentence entailed by the first?

Answer:
no