"A global identifier, e.g. a URI, a prefixed string, or any other identifier that can be used to refer to a standardized property type.\n\nThe following prefixes and values are reserved:\nstarRating:HOTREC\nstarRating:DEHOGA\nstarRating:WHR\nstarRating:Hotelstars\n"@en . . . . . . "property ID (0..1)"@en .