Sentence 1: 2For a description of prototyping and the spiral model, see Roger S. Pressman, Software A Practitioner's Approach, 3rd ed.

Sentence 2: For a description of prototyping and the spiral model, see Roger S. Pressman, Software A Practitioner's Approach, 3rd ed.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: It is interesting to see how warm he grew toward Alexander Hamilton (he signed his letters I am Your Affectionate), and how awkward and self-conscious toward Jefferson, whose allies were berating Washington in such exaggerated and indecent terms as could scarcely be applied to a Nero; a notorious defaulter; or even to a common pick-pocket.

Sentence 2: He signed his letters towards Hamilton very lovingly.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: They came back to build mountain retreats, as well as regular little cottages or perhaps an occasional mansion.

Sentence 2: The cottages are interleaved by the large mansions.
Is this second sentence entailed by the first?

Answer:
it is not possible to tell