About: http://webisa.webdatacommons.org/240400871

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	Naturally occurring oxygen is a mixture of its three stable isotopes and they are found in the percentages shown: 16O (99.8%), 17O (0.04%) and 18O (0.2%).
http://www.w3.org/ns/prov#wasQuotedFrom	chemicool.com