Premise:
"Giza was the site of a royal burial ground from the days of the Early Empire and the desert landscape is dotted with numerous mud brick tombs and mastabas (stone tombs with flat roofs), though they are by no means as impressive as the pyramids themselves."
Hypothesis: There are multiple mastabas and mud brick tombs across the desert landscape.

yes

Premise:
"The witch approached the demon, a black clay bowl in one hand and her wicked knife in the other."
Hypothesis: The witch gave gifts to the demon.

it is not possible to tell

Premise:
"One, two, three, four, five, but where, then, is the cup of Mr. Inglethorp?""
Hypothesis: All of the cups were accounted for.
no