Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE employee ( emp_fname VARCHAR, emp_num VARCHAR )
TABLE: CREATE TABLE professor ( emp_num VARCHAR, dept_code VARCHAR )
TABLE: CREATE TABLE CLASS ( class_room VARCHAR, prof_num VARCHAR )
TABLE: CREATE TABLE department ( dept_code VARCHAR, dept_name VARCHAR )

### Question ###
Find the first names of all professors in the Accounting department who is teaching some course and the class room.

### Accurate SQL ###

SELECT T2.emp_fname, T1.class_room FROM CLASS AS T1 JOIN employee AS T2 ON T1.prof_num = T2.emp_num JOIN professor AS T3 ON T2.emp_num = T3.emp_num JOIN department AS T4 ON T4.dept_code = T3.dept_code WHERE T4.dept_name = 'Accounting'