CREATE TABLE table_68889 ("Year" FLOAT, "Men's singles" TEXT, "Women's singles" TEXT, "Men's doubles" TEXT, "Women's doubles" TEXT, "Mixed doubles" TEXT)

Who played in the men's singles during the tournament where Ragna Ingolfsdottir played in the women's singles?
SELECT "Men's singles" FROM table_68889 WHERE "Women's singles" = 'ragna ingolfsdottir'
SELECT "Men's singles" FROM "table_68889" WHERE "Women's singles" = 'ragna ingolfsdottir'