Premise:
"Most of the men here-- She pointed to the gangs that moved about busily doing nothing, all in costumes similar to his, except for the boots and hat."
Hypothesis: The gangs were wearing similar costumes to his, which worried him.

it is not possible to tell

Premise:
"The others depended on it."
Hypothesis: It was depended on.

yes

Premise:
"However, he thought the human subjects aspect might not belong, because human subjects issues will not affect screening and intervention on a daily basis in the clinical setting."
Hypothesis: He thought the human subjects aspects belong in clinical settings.
no