Table schema:
CREATE TABLE table_name_20 (white VARCHAR, opening VARCHAR, moves VARCHAR, black VARCHAR, result VARCHAR)

Question: What's the white for a black of Anand, a result of  ½–½, 39 moves, and an opening of d37 queen's gambit declined?
SQL: SELECT white FROM table_name_20 WHERE black = "anand" AND result = "½–½" AND moves = 39 AND opening = "d37 queen's gambit declined"