I need to erase this Friday's reminder for dinner with my sister
[IN:DELETE_REMINDER I need to erase [SL:DATE_TIME this Friday ] 's reminder for [SL:TODO [IN:GET_TODO [SL:TODO dinner ] with [SL:ATTENDEE [IN:GET_CONTACT [SL:CONTACT_RELATED my ] [SL:TYPE_RELATION sister ] ] ] ] ] ]