PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • An electronic book (variously: e-book, eBook, e-Book, ebook, digital book, or even e-edition) is a book-length publication in digital form, consisting of text, images, or both, readable on computers or other electronic devices.[1] Although sometimes defined as an electronic version of a printed book,[2] many e-books exist without any printed equivalent.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org