Premise:
"Richelieu's major achievement was the greater centralization of royal power, laying the foundations of the strong sense of national identity that has characterized France ever since."
Hypothesis: He also improved royal power in the United States.

no

Premise:
"It's a lovely 3 km- (2 mile-) stroll down from the Porta Nuova, and is a point of pilgrimage for those curious to see the wooden crucifix that spoke to a troubled 27-year-old Francis in 1209, telling him to go and repair the world."
Hypothesis: It takes less than 2 hours to walk for the Porta Nuova to the crucifix.

it is not possible to tell

Premise:
"Nemesis Hunt refutes the slack-jawed Novak, with the computation that 5 + 4 = 9 and therefore half of Starr's deputies are not current DOJ employees."
Hypothesis: Fifty percent of Starr's deputies are not present Department of Justice members.
yes