Premise: Gemma Arterton . She is known for her roles in the fantasy films Clash of the Titans ( 2010 ) , Prince of Persia : The Sands of Time ( 2010 ) , Byzantium ( 2013 ) and as the character Gretel in Hansel and Gretel : Witch Hunters ( 2013 ) .
Hypothesis: Gemma Arterton performed in the book Hansel and Grentel: Witch Hunters.
Label: CONTRADICTION