<http://webisa.webdatacommons.org/191519879>	<http://www.w3.org/ns/prov#value>	"A convenient and safe system to remove hard tissue such as bone is a long standing challenge." .
<http://webisa.webdatacommons.org/191519879>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.de> .
<http://webisa.webdatacommons.org/191519879>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/308723572>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/191519879> .