Premise:
"What is open to you."
Hypothesis: What you cannot do.

no

Premise:
"That went quick, he already had a tried and true mix of additives, preservatives, and stabilizers ready, which had always worked just fine."
Hypothesis: It was a long process since he had to acquire each of the ingredients before he could start.

no

Premise:
"223 Chapter 27 A Supper Party at the Savoy THE supper party given by Mr. Julius Hersheimmer to a few friends on the evening of the 30th will long be remembered in catering circles."
Hypothesis: Mr. Julius Hersheimmer's supper party was an historical event in catering circles.
yes