CREATE TABLE table_name_77 (opening VARCHAR, tournament VARCHAR, white VARCHAR, year VARCHAR)

What is Opening, when White is Kramnik, when Year is less than 2001, and when Tournament is 'Siemens Giants'?
SELECT opening FROM table_name_77 WHERE white = "kramnik" AND year < 2001 AND tournament = "siemens giants"
SELECT "opening" FROM "table_name_77" WHERE "kramnik" = "white" AND "siemens giants" = "tournament" AND "year" < 2001