<http://schema.org/contactType>
"customer service"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.bukalapak.com/p/hobi-koleksi/buku/masak/3sjq43-jual-buku-sehat-dan-lezat-menu-untuk-penderita-diabetes-mellitus-on8358412z>