About: http://webisa.webdatacommons.org/222265041

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	Prepares the session data for the captcha.Child classes overwrite this method do do further intialization, i.e. generating questions and answers.
http://www.w3.org/ns/prov#wasQuotedFrom	php.net