About: http://webisa.webdatacommons.org/81128649

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	To your 2nd question, I don???t know this plugin ???Series Engine???, generally plugins especially if they rely more on WordPress functionality rather then theme related should be fine.
http://www.w3.org/ns/prov#wasQuotedFrom	themeforest.net