Premise:
"Not if they're from another planet.""
Hypothesis: not if they are from another planet.

yes

Premise:
"Insofar as the social insurance program applies to employees of the United States government, the terms and conditions are generally the same as the program for private employees."
Hypothesis: The terms and conditions vary greatly between the Government employees and private sector employees.

no

Premise:
"Constantine then had a magnificent Classical basilica and rotunda built to house the tomb of Jesus."
Hypothesis: Constantine had a basilica and rotunda to hold Jesus's tomb.
yes