CREATE TABLE table_77136 ("PMSC No." CLOB, "Year" FLOAT, "1st Prize" CLOB, "2nd Prize" CLOB, "3rd Prize" CLOB)

In what year did Kin-fung Leung get 2nd prize?
SELECT "Year" FROM table_77136 WHERE "2nd Prize" = 'kin-fung leung'
SELECT "Year" FROM "table_77136" WHERE "2nd Prize" = 'kin-fung leung'