(Inherited-Facet-Value Slot-Value-Type Elevator Safety_Beam_Between_Guiderails Real-Number) (Inherited-Facet-Value Slot-Cardinality Elevator Safety_Beam_Between_Guiderails 1) (<= (Has-Parameter-Slot $X Safety_Beam_Between_Guiderails) (Elevator $X)) (Inherited-Slot-Value Elevator Has-Parameter-Slot Safety_Beam_Between_Guiderails)