Premise:
"More inventive than Gordon is the Chinese artist Huang Yong Ping, who was caught abroad during the Tiananmen Square uprising and now lives in Paris."
Hypothesis: Huang Yong Ping was set free during the uprising and moved to Japan.

no

Premise:
"we may we may need a constitutional convention"
Hypothesis: We might need to get together to vote on the topic.

it is not possible to tell

Premise:
"A hundred million PCs, a billion personalized book and CD sales, a zillion cups of coffee ..."
Hypothesis: Many books, a lot of books and music sold plus much coffee.
yes