Question: "I Was a Fool" is a song written and performed by Canadian duo Tegan and Sara, inspired by one of Rihanna's singles ,Unfaithful from her second studio album "A Girl like Me" (2006), written by who?
{'answer': 'Shaffer "Ne-Yo" Smith', 'supporting_facts': [['I Was a Fool', 1], ['Unfaithful (song)', 1]]}