Premise:
"Many News Quiz participants treated the top hat as a self-consciously anachronistic symbol of the rich."
Hypothesis: News Quiz participants view the top hat as a representation of the rich in olden times.

yes

Premise:
"One doesn't want to get caught in them."
Hypothesis: It would be a bad idea to get caught in the webs.

it is not possible to tell

Premise:
"Pepper and Blanco have conferred with Bush campaign officials in Austin twice since mid-August to discuss their ideas, according to sources on the campaign."
Hypothesis: Blanco and Pepper are Bush advisors.
it is not possible to tell