About: http://webisa.webdatacommons.org/92313995

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Perhaps the script additions from your post are a factor as I have added them to this build's koreader_kobo.sh, I am thinking you might have also.
http://www.w3.org/ns/prov#wasQuotedFrom	mobileread.com