Premise: Dr. Dre . In 2014 , Dr. Dre was ranked as the second richest figure in the American hip hop scene by Forbes with a net worth of $ 550 million ; he is at the top of the 2015 Forbes list , with an estimated pre-tax take of $ 620 million in 2014 .
Hypothesis: Forbes estimated Dr. Dre's net worth at $550 million in 2013.
Label: CONTRADICTION