Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE problems (problem_id VARCHAR, reported_by_staff_id VARCHAR)
TABLE: CREATE TABLE staff (staff_id VARCHAR, staff_first_name VARCHAR, staff_last_name VARCHAR)
TABLE: CREATE TABLE problems (reported_by_staff_id VARCHAR)
TABLE: CREATE TABLE staff (staff_id VARCHAR)

### Question ###
What are the ids of the problems reported before the date of any problem reported by Lysanne Turcotte?

### Accurate SQL ###

SELECT T1.problem_id FROM problems AS T1 JOIN staff AS T2 ON T1.reported_by_staff_id = T2.staff_id WHERE date_problem_reported < (SELECT MIN(date_problem_reported) FROM problems AS T3 JOIN staff AS T4 ON T3.reported_by_staff_id = T4.staff_id WHERE T4.staff_first_name = "Lysanne" AND T4.staff_last_name = "Turcotte")