About: http://webisa.webdatacommons.org/443918620

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	The Doppler Effect enabled the scientists to deduce some properties of these planets, including their masses and orbital periods.
http://www.w3.org/ns/prov#wasQuotedFrom	spacedaily.com