Premise:
"In other words, in each succeeding year, a dollar spent on computers purchased 22 percent more computing power on average than it did the previous year."
Hypothesis: In the future computers will be powerful and inexpensive.

it is not possible to tell

Premise:
"'Crap,' I reflected, poking the nearest dinosaur with my foot."
Hypothesis: I was having the coolest dream about living with dinosaurs.

it is not possible to tell

Premise:
"That's so, said Julius with a nod."
Hypothesis: Julius nodded in agreement.
yes