Premise: Critics' only complaints are about the play itself, which they call heavy-handed and overlong.

Hypothesis: Critics thought the play could have been a bit shorter.
Answer: it is not possible to tell

Premise: Only one son had survived to tell of the disaster.

Hypothesis: All but one man survived.
Answer: no

Premise: I cannot thank you enough for your assistance, said Ca'daan.

Hypothesis: He is appreciative of their help.
Answer: yes

Premise: However, evolutionary acquisition has yet to be consistently implemented with success on individual weapon system acquisitions.

Hypothesis: Evolutionary acquisition has yet to be consistently implemented with success.
Answer: yes