Sentence 1: The Administrator of the Environmental Protection Agency shall promulgate regulations within 18 months after November 15, 1990 to require that all affected sources subject to subpart 1 of part B of title IV of the Clean Air Act shall also monitor carbon

Sentence 2: Monitoring carbon is voluntary according to the EPA.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: I was a special patient.

Sentence 2: I was different from all other patients they had had before.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: They were building a new hall for it, to be constructed only of natural materials and hand labor, but that was a project that would take long months still.

Sentence 2: Building the new hall would take them a few days.
Is this second sentence entailed by the first?

Answer:
no