Write SQL query to solve given problem: Mention the person ID of faculty professor who taught course ID 104 and the course level.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.p_id, T3.courseLevel FROM person AS T1 INNER JOIN taughtBy AS T2 ON T1.p_id = T2.p_id INNER JOIN course AS T3 ON T3.course_id = T2.course_id WHERE T3.course_id = 104 AND T1.hasPosition <> 0