Remind me to pick up Brenna at 9 pm; alert me at 1 hour before.
[IN:CREATE_REMINDER Remind [SL:PERSON_REMINDED me ] to [SL:TODO [IN:GET_TODO [SL:TODO pick up Brenna ] [SL:DATE_TIME at 9 pm ] ] ] ; alert me [SL:DATE_TIME at 1 hour before ] . ]