About: http://webisa.webdatacommons.org/75218847

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	They have become increasingly more important as markers or guides in the fields, while spraying herbicides or other chemicals, in order to eliminate spray overlaps and skips.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com