Question: What type of thing are all five of those?
SQL: SELECT DISTINCT  T2.Type_of_Thing_Code FROM Timed_Status_of_Things AS T1 JOIN Things AS T2 ON T1.thing_id   =   T2.thing_id WHERE T1.Status_of_Thing_Code   =   'Close' and T1.Date_and_Date  <  '2017-06-19 02:59:21'