Premise: A float drifted by, bearing scantily clad mascots.

Hypothesis: There was no floats in the parade.
Answer: no

Premise: Ca'daan looked at the scars on the man's body, strange wounds he could not understand.

Hypothesis: Ca'daan saw the man had been injured.
Answer: yes

Premise: Retired Supreme Court Justice William Brennan died.

Hypothesis: William Brennan passed away earlier today.
Answer: it is not possible to tell

Premise: they get into a wrong crowd first and then they start a drug problem

Hypothesis: The crowd you're with doesn't matter at all.
Answer: no