Premise:
"Did you think you were imitating a great man?' He sneered at me."
Hypothesis: He sneered as he spoke to me.

yes

Premise:
"Of the dozen villas that Tiberius built on Capri, his favorite island retreat, the best preserved is the ruins of Villa Jovis (Jupiter's Villa, or Tiberius' Villa), sprawling acrosean eastern promontory opposite the mainland."
Hypothesis: Capri is Tiberius' favorite island retreat and he constructed a dozen villas on it.

yes

Premise:
"Subpart 1. Nitrogen Oxides Emission Reduction Program"
Hypothesis: There is no viable way to reduce nitrogen oxide emissions.
no