claim: Sledgehammer was first performed live at the 2014 MTV Europe Music Awards.
evidence: Holly Hills is a census-designated place -LRB- CDP -RRB- in Arapahoe County , Colorado , United States , and an enclave of the City and County of Denver .. census-designated place. census-designated place. Arapahoe County. Arapahoe County, Colorado. Colorado. Colorado. United States. United States. enclave. enclave. Denver. Denver. The population as of the 2010 Census was 2,521 .. 2010 Census. United States Census, 2010