query: 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"
question: Find start and end date behaviors incident student last name "Fahey".
query_toks: 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 ''
query_toks_no_value: 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 = value
question_toks: Find start and end date behaviors incident student last name "Fahey".