Premise:
"But Foster's expertise is historical, and he warns us that he will write as a historian."
Hypothesis: Foster has no expertise.

no

Premise:
"Nowadays, everybody seems to love it."
Hypothesis: Everyone currently loves it and owns at least one.

it is not possible to tell

Premise:
"well they they get Oshmid Yakomo you know the janitor for the US Embassy and you know"
Hypothesis: Oshmid Yakomo is the US Embassy's janitor.
yes