CREATE TABLE table_2966 ("Year" FLOAT, "Champions" TEXT, "Runners-up" TEXT, "Score in the final" TEXT, "3rd-place" TEXT, "4th-place" TEXT)

In what year did Hougang United finish in 4th place?
SELECT "Year" FROM table_2966 WHERE "4th-place" = 'Hougang United'
SELECT "Year" FROM "table_2966" WHERE "4th-place" = 'Hougang United'