Table schema:
CREATE TABLE CLASS (class_room VARCHAR, prof_num VARCHAR); CREATE TABLE professor (emp_num VARCHAR, dept_code VARCHAR); CREATE TABLE department (dept_code VARCHAR, dept_name VARCHAR); CREATE TABLE employee (emp_fname VARCHAR, emp_num VARCHAR)

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