Sentence 1: The Administrator has already issued regulations under the existing Section 403 for sulfur dioxide allowances and must issue regulations within 24 months of enactment governing the issuance, transfer, recording, and tracking of the nitrogen oxides allowances and mercury allowances.

Sentence 2: Section 403 deals with sulfur dioxide allowances.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: And there's an interesting paradox here with Africana : Gates is probably the only black intellectual in America with the charisma and clout to get it published.

Sentence 2: Gates is an unknown author whose work and ideas were never fully realized or noticed by anyone, least of all the media.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Conversely, pro-lifers argue that pro-choicers are racists because they use Medicaid, and abortion, to exterminate black and Hispanic fetuses.

Sentence 2: They use abortion to exterminate the black and Hispanic fetuses.
Is this second sentence entailed by the first?

Answer:
it is not possible to tell