About: http://webisa.webdatacommons.org/156141353

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	Also well-known are materials, such as ammonium dihydrogen phosphate (ADP) and potassium dihydrogen phosphate (KDP), which become optically active in the presence of external magnetic and electric fields.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com