Question: What singer, best known for his recording of the song "Raindrops Keep Fallin' on My Head", had his single "Most of All" reach #2 on the "Billboard" Adult Contemporary singles chart in 1970?
{'answer': 'B. J. Thomas', 'supporting_facts': [['Most of All (song)', 0], ['Most of All (song)', 1], ['B. J. Thomas', 2]]}