About: http://webisa.webdatacommons.org/125393314

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	Not to say that there can not be problematic variable names as well, but your examples look like there is a logic to them, if you knew what the common acronyms at your site are.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com