Remind Mark and Jane to leave at 3 p.m. Alert them 15 minutes before departure.
[IN:CREATE_REMINDER Remind [SL:PERSON_REMINDED Mark ] and [SL:PERSON_REMINDED Jane ] to [SL:TODO [IN:GET_TODO [SL:TODO leave ] [SL:DATE_TIME at 3 p.m ] ] ] . Alert them [SL:DATE_TIME 15 minutes before ] departure . ]