Question: What singer who was a member of the Buckaroos wrote a song that peaked at number 2 on the U.S. "Billboard" Hot Country Singles chart?
{'answer': 'Buck Owens', 'supporting_facts': [["Excuse Me (I Think I've Got a Heartache)", 0], ["Excuse Me (I Think I've Got a Heartache)", 1], ['Buck Owens', 0]]}