About: http://webisa.webdatacommons.org/193494967

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	They can use colors to estimate the spectral types of stars, the types of galaxies, to sort asteroids into different classes, and to estimate the distances to galaxies and quasars.
http://www.w3.org/ns/prov#wasQuotedFrom	sdss.org