About: http://webisa.webdatacommons.org/19879932

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	your 3 first points helped me to decide for django, I do not know about bug fixing yet... for the record, the data modeling when you work with databases is a big plus too.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com