user: Question: Who was the opponent of Anand in the match with 20 moves that opened with E15 Queen's Indian Defence?
Columns: ['White', 'Black', 'Year', 'Result', 'Moves', 'Tournament', 'Opening']
Types: ['text', 'text', 'real', 'text', 'real', 'text', 'text']
Sample row: ['Kramnik', 'Anand', 2002.0, '½–½', 33.0, 'León', "D37 Queen's Gambit Declined"]
SQL:

assistant: SELECT "Black" FROM "Table" WHERE "White" = 'Anand' AND "Moves" = 20.0 AND "Opening" = 'E15 Queen''s Indian Defence';