About: http://webisa.webdatacommons.org/262385892

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	These sensors, however, are highly complex and, in some cases, require the use of dangerously toxic materials such as mercury.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au