Find the first names and degree of all professors who are teaching some class in Computer Info. Systems department.
CREATE TABLE department (
    dept_code VARCHAR,
    dept_name VARCHAR
)

CREATE TABLE CLASS (
    prof_num VARCHAR
)

CREATE TABLE professor (
    prof_high_degree VARCHAR,
    emp_num VARCHAR,
    dept_code VARCHAR
)

CREATE TABLE employee (
    emp_fname VARCHAR,
    emp_num VARCHAR
)
SELECT DISTINCT T2.emp_fname, T3.prof_high_degree 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 = 'Computer Info. Systems'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Find the first names and degree of all professors who are teaching some class in Computer Info. Systems department. ### Input: CREATE TABLE department (
    dept_code VARCHAR,
    dept_name VARCHAR
)

CREATE TABLE CLASS (
    prof_num VARCHAR
)

CREATE TABLE professor (
    prof_high_degree VARCHAR,
    emp_num VARCHAR,
    dept_code VARCHAR
)

CREATE TABLE employee (
    emp_fname VARCHAR,
    emp_num VARCHAR
) ### Response: SELECT DISTINCT T2.emp_fname, T3.prof_high_degree 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 = 'Computer Info. Systems'