Remind me in half an hour to send a text message to my wife.
[IN:CREATE_REMINDER Remind [SL:PERSON_REMINDED me ] [SL:DATE_TIME in half an hour ] to [SL:TODO [IN:SEND_MESSAGE send a text message to [SL:RECIPIENT [IN:GET_CONTACT [SL:CONTACT_RELATED my ] [SL:TYPE_RELATION wife ] ] ] ] ] . ]