<http://webisa.webdatacommons.org/prov/321978455>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/100304877> .
<http://webisa.webdatacommons.org/100304877>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/100304877>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/100304877>	<http://www.w3.org/ns/prov#value>	"Additionally, other wet etchants can be used, such as dilute solutions of buffered hydrofluoric acid or ammonia fluoride." .