<human>: Does the sentence "An autopsy revealed that he had ephedrine, a stimulant banned by the NCAA, in his system, which prompted Northwestern to investigate the prevalence of stimulants and other banned substances across all of its athletic programs." provide a valid answer to the question "What did an autopsy reveal was in Rashidi Wheeler's system after he died during a practice?"
OPTIONS:
- yes
- no
<bot>: yes