About: http://webisa.webdatacommons.org/190067569

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	Heavy metals and halogens such as iodine and fluorine, on occasion added to promote the coloration of stony corals, are toxic when present in unnaturally high concentrations.
http://www.w3.org/ns/prov#wasQuotedFrom	advancedaquarist.com