<https://negozio.happymec.it/negozio-online/contents/it/Product-P1694>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://negozio.happymec.it/negozio-online/contents/it/d490_Travetto_IPE_in_barre_da_3_metri.html>