Premise:
"This country is hungry for a new-style campaign that is positive, hopeful, inclusive and unites America."
Hypothesis: What America wants is a negative, hopeless and discriminatory campaign.

no

Premise:
"no i haven't i've never been up there"
Hypothesis: I have never been there.

yes

Premise:
"A year later, Richard the Lionheart, one of the leaders of the Third Crusade, won back Akko (Acre) but failed to regain Jerusalem."
Hypothesis: Richard the Lionheart lost Jerusalem because he ran out of troops.
it is not possible to tell