About: http://webisa.webdatacommons.org/324152819

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	penumbra - (n.) (a.) For an eclipse, the part of the shadow from which the sun or other radiating body is only partially occulted; (b) of a sunspot, the outer region of the sunspot, not as dark as the central umbra.
http://www.w3.org/ns/prov#wasQuotedFrom	ucsd.edu