About: http://webisa.webdatacommons.org/342081444

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	Examples of useful condensing agents are sodium hydroxide, potassium hydoroxide, sodium amide, sodium hydride, and alcoholates such as sodium methylate, potassium-t-butoxide, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com