Remind me every half hour between 9AM and 7PM to change the watering location.
[IN:CREATE_REMINDER Remind [SL:PERSON_REMINDED me ] [SL:RECURRING_DATE_TIME [IN:GET_RECURRING_DATE_TIME [SL:FREQUENCY every half hour ] [SL:DATE_TIME between 9 AM and 7 PM ] ] ] to [SL:TODO change the watering location ] . ]