About: http://webisa.webdatacommons.org/346515970

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	Everything is a class" is a Java idiom he is specifically not a Python idiom. (Almost) everything can be a class in Python, and if he is more comfortable for you then go for it, but Python does not require such a thing.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com