Remind Mom and Dad to leave at 3pm and alert them 30 mins beforehand.
[IN:CREATE_REMINDER Remind [SL:PERSON_REMINDED [IN:GET_CONTACT [SL:TYPE_RELATION Mom ] ] ] and [SL:PERSON_REMINDED [IN:GET_CONTACT [SL:TYPE_RELATION Dad ] ] ] to [SL:TODO [IN:GET_TODO [SL:TODO leave ] [SL:DATE_TIME at 3 pm ] ] ] and alert them [SL:DATE_TIME 30 mins beforehand ] . ]