About: http://webisa.webdatacommons.org/428097144

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	Free radicals???highly reactive chemical species that have been implicated in aging, diseases such as Alzheimer's and cancer, and even destruction of the ozone layer???are not all bad, Marsh said.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org