Premise:
"President Clinton changed the mission of U.S. nuclear-weapons policy . The old waging nuclear war against a superpower."
Hypothesis: Clinton made the nuclear weapons policy tougher.

it is not possible to tell

Premise:
"Surely you don't want the whole house to know of this occurrence? "
Hypothesis: You don't want people to hear about this.

yes

Premise:
"There is also an attractive 18th-century residence called Ceteau Murat."
Hypothesis: Ceteau Murat is a shop which was constructed in 1920.
no