About: http://webisa.webdatacommons.org/228301353

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 contrast to the Amazon mainstream and the Rio Solim???es, which are considered to be whitewater rivers, blackwater rivers, such as the Rio Negro, have a flat REE pattern with higher REE concentrations than whitewater rivers.
http://www.w3.org/ns/prov#wasQuotedFrom	science.gov