Premise:
"Its royal House of Savoy walked a diplomatic tightrope between the rivalries of France, Switzerland, Spain, and the German emperors until the fall of Napoleon."
Hypothesis: The death of Napoleon had an effect on the House of Savoy.

yes

Premise:
"Lovely floating gardens growing melons, tomatoes, cucumbers, and lotus root in a mesh of reeds and mud floating in the water and moored in squares by four poles stuck in the lake bed, add to the tranquil beauty of the lake."
Hypothesis: Lovely floating gardens had grew fruit one time beforehand.

it is not possible to tell

Premise:
"I did not like it ."
Hypothesis: I told my friends about not liking it.
it is not possible to tell