Table schema:
CREATE TABLE Behavior_Incident (date_incident_start VARCHAR, student_id VARCHAR); CREATE TABLE Students (student_id VARCHAR, last_name VARCHAR)

Question: Find the start and end dates of behavior incidents of students with last name "Fahey".
SQL: SELECT T1.date_incident_start, date_incident_end FROM Behavior_Incident AS T1 JOIN Students AS T2 ON T1.student_id = T2.student_id WHERE T2.last_name = "Fahey"