Question: A 1944 collaboration of the Cow-Cow Boogie featured the American pop vocal group with lead singer Bill Kenny and which other artist?
{'answer': 'Ella Fitzgerald', 'supporting_facts': [['Cow-Cow Boogie', 0], ['Cow-Cow Boogie', 8], ['The Ink Spots', 0], ['The Ink Spots', 2]]}