Premise: At dinner parties, people argue whether the kid who wrote bitch on a toilet stall in the middle-school bathroom should be expelled.

Hypothesis: The school has yet to establish who wrote bitch on the toilet stall.
Answer: it is not possible to tell

Premise: One possibility is that studies report different estimates of the single true relationship between a given pollutant and a health effect due to differences in study design, random chance, or other factors.

Hypothesis: The studies have various reports.
Answer: yes

Premise: Said crowd was evidently impressed... Their commander stepped forward.

Hypothesis: The commander waited on the dais while he was introduced.
Answer: it is not possible to tell

Premise: It's dark.

Hypothesis: There is no light.
Answer: it is not possible to tell