Which problems are reported by the staff with first name "Christop"? Show the descriptions of the problems.
SELECT T1.problem_description FROM problems AS T1 JOIN staff AS T2 ON T1.reported_by_staff_id = T2.staff_id WHERE T2.staff_first_name = "Christop"
SELECT T1.problem_description FROM problems AS T1 JOIN staff AS T2 ON T1.reported_by_staff_id = T2.staff_id WHERE T2.staff_first_name = "Christop"
[{'problem_description': 'w'}, {'problem_description': 'd'}, {'problem_description': 'r'}]