I don't want to be late for work at 9 am; can you alert me 15 minutes before?
[IN:CREATE_REMINDER [SL:PERSON_REMINDED I ] don't want to be late for [SL:TODO [IN:GET_TODO [SL:TODO work ] [SL:DATE_TIME at 9 am ] ] ] ; can you alert me [SL:DATE_TIME 15 minutes before ] ? ]