About: http://webisa.webdatacommons.org/356311321

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	Oxygen is a very reactive molecule and forms several toxic by-products, such as superoxide (O2???.), hydrogen peroxide (H2O2), and the hydroxyl radical (OH??).
http://www.w3.org/ns/prov#wasQuotedFrom	academicroom.com