Premise:
"You can't get four years out of the equation even if you use Washington fuzzy math!"
Hypothesis: It's easy to make it equal four years!

no

Premise:
"Exceptionbased T&A systems, as the name implies, require pay period recording of arrival and departure times only if material variances11 from preestablished work schedules occur."
Hypothesis: T&A systems require pay period recording of each individuals name

it is not possible to tell

Premise:
"Susan wore a brown robe and a headscarf."
Hypothesis: Susan wore a headscarf.
yes