About: http://webisa.webdatacommons.org/410193667

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	In addition to rearranging rocks, other obstacles such as bricks and trenches are often employed for specialized testing.
http://www.w3.org/ns/prov#wasQuotedFrom	nasa.gov