Database: college_1_minus_1_0
Question: What are the first names, office locations of all lecturers who have taught some course?
SQL: select t1.emp_fname , t3.prof_office , t2.crs_description from class_employee as t1 join course as t2 on t1.crs_code = t2.crs_code join professor as t3 on t1.prof_num = t3.emp_num