About: http://webisa.webdatacommons.org/16863427

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	And because your class is a future, the trigger is still in the future context so it can not call the other future method within itself.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com