<http://schema.org/contactType>
"customer service"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.bukalapak.com/p/buku/masak/3sjr23-jual-buku-cake-decorating-pemula-menengah-fc-oleh-etha-margaretha-trezise-on20173722z>