About: http://webisa.webdatacommons.org/373787656

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	Superoxide, hydroxyl ions, hydrogen peroxide, and nitric oxide are examples of free radicals, that is, atoms or molecules with an unpaired electron.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com