<https://www.obi.sk/sk/rohove-ventily/schell-ventil-comfort-1-2-x-3-8-/p/5075759#5075759>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.obi.sk/regaly-a-police/kovovy-zasuvny-regal-na-velke-zatazenie-pozinkovany-180-cm-x-90-cm-x-40-cm/p/1054139>