Premise:
"The Rh??ne Valley has always been a central artery, a channel for river, road, and rail traffic between the north and the south."
Hypothesis: The Rhone valley is a channel for river, road, and rail traffic.

yes

Premise:
"are are you at TI Austin or"
Hypothesis: You are definitely at TI Austin.

no

Premise:
"I didn't know it was of any importance.""
Hypothesis: I was not aware that it was important.
yes