Read this: For five consecutive seasons, starting in season seven, the title was given to a white male who plays the guitar – a trend that Idol pundits call the "White guy with guitar" or "WGWG" factor. Just hours before the season eleven finale, where Phillip Phillips was named the winner, Richard Rushfield, author of the book American Idol: The Untold Story, said, "You have this alliance between young girls and grandmas and they see it, not necessarily as a contest to create a pop star competing on the contemporary radio, but as .... who's the nicest guy in a popularity contest," he says, "And that has led to this dynasty of four, and possibly now five, consecutive, affable, very nice, good-looking white boys."

How many seasons in a row were won by caucasian guitar playing males? 
What is the answer? (If it cannot be answered, return "unanswerable")
five