Premise:
"Imagine Harpo Marx giving the hot foot to a pompous official, who takes out a machine gun and blows him That's how cheap Benigni's hash of farce and tragedy is."
Hypothesis: Benigni's writing is just impossible to imagine as truth..

it is not possible to tell

Premise:
"The estimated cost to the government (and benefit to veterans disabled as a result of VA hospitalization, medical or surgical treatment) is $166."
Hypothesis: The government estimated cost is $166.

yes

Premise:
"One must turn to the informative catalog, by guest curator Richard Kendall, to learn something of this unsavory episode in Degas' life, a further lesson that avant-garde art and retrograde politics often coexist."
Hypothesis: Most retrograde politicians have fabulous avant-garde art galleries.
it is not possible to tell