About: http://webisa.webdatacommons.org/241901353

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	If the observer moves so as to destroy the alignment of observer, singularity, and object, one of the images eventually vanishes and the phenomenon evaporates.
http://www.w3.org/ns/prov#wasQuotedFrom	ams.org