<http://delta-elektrogas.com/wp-content/uploads/2013/03/SIL_VMR_VMR-OTN_VML_en.pdf>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://delta-elektrogas.com/content/products/vml/sil_vmr_vmr-otn_vml_en/>