Database: college_1
Question: List the credits is the course that the student with the last name Smithson took, and what are the description?
SQL: select t4.crs_description ,  t4.crs_credit from class as t1 join enroll as t2 on t1.class_code  =  t2.class_code join student as t3 on t3.stu_num  =  t2.stu_num join course as t4 on t4.crs_code  =  t1.crs_code where t3.stu_lname  =  "smithson"