Sentence 1: In addition to recognizing the complex atmospheric chemistry relevant for some pollutants, air quality modelers also must deal with uncertainties associated with variable meteorology and the spatial and temporal distribution of emissions.

Sentence 2: Air quality modelers must be able to recognize all pollutants.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Indeed, the entire enterprise of serious literary fiction is so marginal that one hates to discourage any sincere effort.

Sentence 2: Serious literary fiction is a small enterprise.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: go to so much trouble when we have so many other things we could be spending our time thinking about

Sentence 2: It's no bother to think of it, plus we have nothing better to do anyways.
Is this second sentence entailed by the first?

Answer:
no