About: http://webisa.webdatacommons.org/347604616

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	I thought the term focus was for the simplest (un)stable node, where the matrix is a multiple of the identity, and all lines are eigenlines.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com