| http://www.w3.org/ns/prov#value | - Other performers at the charity concert included Diana Ross, Demi Lovato, ???American Idol??? winner Scotty McCreery and Megan Hilty, star of the NBC musical drama ???Smash.???In brief remarks, Obama said the celebration was ???a chance to get in the Christmas spirit, spread some joy and sing along with artists who have much better voices than we do.???He also said the holiday season was a time to
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