Premise:
"In the spirit of equal opportunity, Pinsky has decided to cease discriminating against poets who suffer the ultimate disability of being deceased."
Hypothesis: Pinsky stopped discriminating against dead poets because they were talented, too.

it is not possible to tell

Premise:
"Built of limestone, it honored generations of rulers who had passed on into the afterlife."
Hypothesis: It's built from limestone.

yes

Premise:
"The story, however, must be backed with evidence."
Hypothesis: This story has evidence to prove it if you search for it.
it is not possible to tell