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