About: http://webisa.webdatacommons.org/366552759

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	First, surfaces such as grass or dirt are softer than indoor surfaces, and reduce loading of the joints (O???Keefe et al. 2011).
http://www.w3.org/ns/prov#wasQuotedFrom	proquest.com