<http://webisa.webdatacommons.org/429575690>	<http://www.w3.org/ns/prov#value>	"important to avoid using anything sharp, such as sand that contains silicates, as this" .
<http://webisa.webdatacommons.org/prov/457709480>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/429575690> .
<http://webisa.webdatacommons.org/429575690>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<aquarticles.com> .
<http://webisa.webdatacommons.org/429575690>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .