Question: When did the first episode of phineas and ferb come out?
Answer: August 17 , 2007
Disambiguated annotations:
qaPairs: question: When did the first one-episode preview of phineas and ferb come out?
answer: August 17, 2007
question: When did the first episode of the phineas and ferb series officially come out?
answer: February 1, 2008