Premise: they they gave me this cock and bull story that because there was a turbo charger on the car they had to prime the turbine with the oil

Hypothesis: There was never a turbo charger in their car.
Answer: it is not possible to tell

Premise: 'I think that'll do for the present, sister,'

Hypothesis: You know that it is sufficient, sister.
Answer: it is not possible to tell

Premise: I followed her, afraid that she was going to faint.

Hypothesis: I followed her because I thought she may vomit.
Answer: no

Premise: She said that the prevalence of alcohol problems was higher than other risk factors.

Hypothesis: She said alcohol problems were more likely than other risk factors.
Answer: yes