Premise:
"Not all Republican moderates are Moderates."
Hypothesis: Republicans are not always what they claim to be.

yes

Premise:
"It is surrounded by luxuriant formal gardens with marvellous views."
Hypothesis: The gardens are very expensive to maintain.

it is not possible to tell

Premise:
"The fifth row is devoted to First-Class Mail in NHH-to-NHH (Non-household-to-Non-household) sector."
Hypothesis: The fifth row is multi-use, and has no dedicated purpose.
no