Sentence 1: The panorama of the five volcanic craters of Mt. Aso blends vivid emerald-green mounds with great carpets of pink azaleas on the surrounding slopes and plateau.

Sentence 2: Mt. Aso has been inactive for over a century.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: He comes back

Sentence 2: He returns.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: Air quality modeling is a critical analytical step that provides the link between emissions changes and the physical effects that affect human health and the environment.

Sentence 2: Air quality modeling is an unhelpful step to link emissions changes and physical effects.
Is this second sentence entailed by the first?

Answer:
no