Question: This song that was released on August 30, 2009, was the fourth single off of the album for what singer who co-produced that album with Nathan Chapman?
{'answer': 'Taylor Swift', 'supporting_facts': [['Fifteen (song)', 0], ['Fifteen (song)', 2], ['Fearless (Taylor Swift album)', 0], ['Fearless (Taylor Swift album)', 2], ['Fearless (Taylor Swift album)', 6]]}