About: http://webisa.webdatacommons.org/402475724

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 California, dentists are required by state law to post a warning that dental amalgams cause exposure to mercury, a chemical known to the state of California to cause birth defects or other reproductive harm.
http://www.w3.org/ns/prov#wasQuotedFrom	chicagotribune.com