CREATE TABLE table_35281 ("Year" FLOAT, "Location" TEXT, "Gold" TEXT, "Silver" TEXT, "Bronze" TEXT)

Who won silver in the year before 2010, the year Chan Ming Shu won gold?
SELECT "Silver" FROM table_35281 WHERE "Year" < '2010' AND "Gold" = 'chan ming shu'
SELECT "Silver" FROM "table_35281" WHERE "Gold" = 'chan ming shu' AND "Year" < '2010'