Premise:
"That Mr. Brown is JULIUS? "
Hypothesis: That Mr. Brown is not the same person as Julius?

no

Premise:
"He realized that he was sitting in the dirt but didn't remember falling there."
Hypothesis: He didn't remember falling off his horse onto a dirt.

it is not possible to tell

Premise:
" VI Sunrise glared harshly over the desert."
Hypothesis: The sun coming up glared over the desert.
yes