About: http://webisa.webdatacommons.org/40937684

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	An open question for theoretical physicists is how gravity acts on a quantum object such as a photon.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com