Question: Who is the lead singer of doobie brothers?
Answer: Tom Johnston
Michael McDonald
Disambiguated annotations:
qaPairs: question: Who is the first lead singer of doobie brothers?
answer: Johnston
Tom Johnston
Charles Thomas Johnston
question: Who is the second lead singer of doobie brothers?
answer: Michael McDonald
question: Who is the third lead singer of doobie brothers?
answer: Johnston
Tom Johnston
Charles Thomas Johnston