SELECT detention_summary FROM Detention
Return all detention summaries.
[Schema (values) (types)]: | behavior_monitoring |  Ref_Address_Types : address_type_code (text) , address_type_description (text) | Ref_Detention_Type : detention_type_code (text) , detention_type_description (text) | Ref_Incident_Type : incident_type_code (text) , incident_type_description (text) | Addresses : address_id (text) , line_1 (text) , line_2 (text) , line_3 (text) , city (text) , zip_postcode (text) , state_province_county (text) , country (number) , other_address_details (text) | Students : student_id (text) , address_id (text) , first_name (text) , middle_name (text) , last_name (text) , cell_mobile_number (text) , email_address (text) , date_first_rental (number) , date_left_university (text) , other_student_details (text) | Teachers : teacher_id (text) , address_id (text) , first_name (text) , middle_name (text) , last_name (text) , gender (text) , cell_mobile_number (text) , email_address (number) , other_details (text) | Assessment_Notes : notes_id (text) , student_id (text) , teacher_id (text) , date_of_notes (text) , text_of_notes (text) , other_details (text) | Behavior_Incident : incident_id (text) , incident_type_code (text) , student_id (text) , date_incident_start (text) , date_incident_end (text) , incident_summary (text) , recommendations (text) , other_details (number) | Detention : detention_id (text) , detention_type_code (text) , teacher_id (text) , datetime_detention_start (text) , datetime_detention_end (text) , detention_summary (text) , other_details (text) | Student_Addresses : student_id (text) , address_id (text) , date_address_from (text) , date_address_to (text) , monthly_rental (text) , other_details (text) | Students_in_Detention : student_id (text) , detention_id (text) , incident_id (text);