premise: Tilda Swinton does performance art.
hypothesis: Katherine Matilda `` Tilda '' Swinton ( born 5 November 1960 ) is a British actress , performance artist , model , and fashion muse , known for her roles in independent and Hollywood films . She is the recipient of two BAFTA Awards , one BIFA Award , an Academy Award for Best Supporting Actress and has received three nominations for a Golden Globe Award . Swinton won the Volpi Cup for Best Actress at the Venice Film Festival for her performance as Isabella of France in Edward II ( 1991 ) . Swinton won the Academy Award for Best Supporting Actress and the BAFTA Award for Best Actress in a Supporting Role for her performance as lawyer Karen Crowder in Michael Clayton ( 2007 ) .