Table schema:
CREATE TABLE table_name_40 (oxford_united_career_ VARCHAR, b_ VARCHAR, appearances VARCHAR, position_ VARCHAR, a_ VARCHAR)

Question: Which OU career [b] had Position [A] as a forward when there were 56 appearances?
SQL: SELECT oxford_united_career_[b_] FROM table_name_40 WHERE position_[a_] = "forward" AND appearances = 56