_:vb1436057 . "2020-08-25"^^ . "Permitted contact strip material"@en . "2021-09-12"^^ . _:vb1436454 _:vb1436362 . "stable" . . _:vb1436056 _:vb1436057 . . _:vb1436362 . _:vb1436056 . _:vb1436362 . _:vb1436057 _:vb1436454 . _:vb1436056 . . "1.1.1.2.3.4" . _:vb1436454 . "Indication of which contact strip materials are permitted to be used. The allowed values for this property belong to the SKOS Concept Scheme http://data.europa.eu/949/concepts/contact-strip-materials/ContactStripMaterials"@en . . "4.10.10" .