Question: Which rapper sings Runnin' From tha Police, a 1995 song, which was one of very few compostions done jointly due to a feud between artists and fans of the East Coast hip hop and West Coast hip hop scenes in the United States?
{'answer': 'Tupac Shakur', 'supporting_facts': [["Runnin' from tha Police", 0], ["Runnin' from tha Police", 1], ['East Coast–West Coast hip hop rivalry', 0], ['East Coast–West Coast hip hop rivalry', 1]]}