CREATE TABLE table_name_82 (year_signed VARCHAR2, year_separated VARCHAR2, chinese_name VARCHAR2)

What was the signed year for the Chinese name who separated in 1987?
SELECT year_signed FROM table_name_82 WHERE year_separated = "1987" AND chinese_name = "蘇永康"
SELECT "year_signed" FROM "table_name_82" WHERE "1987" = "year_separated" AND "chinese_name" = "蘇永康"