CREATE TABLE table_37559 ("Outcome" CLOB, "Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Partner" CLOB, "Opponents" CLOB, "Score" CLOB)

Which Partner has a Tournament of catella swedish open?
SELECT "Partner" FROM table_37559 WHERE "Tournament" = 'catella swedish open'
SELECT "Partner" FROM "table_37559" WHERE "Tournament" = 'catella swedish open'