text: The Museum of Cetemporary Art , known as MOCA ( 250 S. Grand Ave . ) , is one of Los Angeles 's most exciting museums , presenting major contemporary shows and a rotating permanent collection by such artists as Piet Mondrian , Mark Rothko , and Franz Kline .
  
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  Works from Mondrian , Rothko , and Kline can be seen in the museum on a rotational basis .