About: http://webisa.webdatacommons.org/359725178

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	Beginning in the early 1980s, biologists began to realize that amphibians such as frogs are extremely sensitive to pollution and other environmental stresses.
http://www.w3.org/ns/prov#wasQuotedFrom	fnal.gov