Sentence 1: This would allow a plausible estimate of the revenue the Postal Service would receive by applying domestic postage rates to such mail.

Sentence 2: The Postal Service sometimes applies a domestic postage rate to mail.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: The Second Republic ended four years later when the man whom Victor Hugo called Napol??on le Petit staged a coup to become Emperor Napoleon III.

Sentence 2: Napolean II became emperor winning a landslide election and the Second Republic began.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Her right eye had a ring of blood around the iris, thick and swollen.

Sentence 2: Her eye was injured.
Is this second sentence entailed by the first?

Answer:
yes