<http://webisa.webdatacommons.org/prov/466426591>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/11706713> .
<http://webisa.webdatacommons.org/11706713>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/11706713>	<http://www.w3.org/ns/prov#value>	"After being inflated through a valve, they are much less dense than water because they are composed mainly of air, surrounded by a thin layer of synthetic material." .
<http://webisa.webdatacommons.org/11706713>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wikipedia.org> .