Please delete the reminder for lunch on Thursday with my sister at 1 pm.
[IN:DELETE_REMINDER Please delete the reminder for [SL:TODO [IN:GET_TODO [SL:TODO lunch ] [SL:DATE_TIME on Thursday ] with [SL:ATTENDEE [IN:GET_CONTACT [SL:CONTACT_RELATED my ] [SL:TYPE_RELATION sister ] ] ] ] ] [SL:DATE_TIME at 1 pm ] . ]