<http://schema.org/itemListElement>
"1"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://www.scribd.com/doc/102584686/BukuBse-belajaronlineGratis-com-Pendidikan-Kewarganegaraan-SMP-IX-Sri-H-Dan-Supriyanto-1>