"WASHINGTON, DC - APRIL 04:  U.S. first lady Michelle Obama jokes with schoolchildren with White House chef Sam Kass (L) after planting the White House Kitchen Garden on the South Lawn of the White House April 4, 2013 in Washington, DC. For the fifth time, the first lady invited students from ""schools that have made exceptional improvements to school lunches"" from Florida, Massachusetts, Tennessee and Vermont to help her plant the garden.  (Photo by Win McNamee/Getty Images)"
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