About: http://webisa.webdatacommons.org/327837734

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	Naidu explained that the cracking noise is caused by a gas, mainly carbon dioxide, that usually is dissolved in the synovial fluid that encapsulates most joints.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org