<http://webisa.webdatacommons.org/121014524>	<http://www.w3.org/ns/prov#value>	"It is not true that radioactivity is a property only of heavy elements." .
<http://webisa.webdatacommons.org/prov/63926382>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/121014524> .
<http://webisa.webdatacommons.org/121014524>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/121014524>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<openstudy.com> .