Premise:
"Like an old party boss--and he is an old party boss--Yeltsin purges his administration regularly."
Hypothesis: Yeltsin isn't one to purge anyone or anything from his administration.

no

Premise:
"There's a flower called Wandering Jew."
Hypothesis: The flower blooms once a year.

it is not possible to tell

Premise:
"The villains were the blacklisters."
Hypothesis: The villain was put on the red list.
no