<http://webisa.webdatacommons.org/157280353>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/157280353>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/322712914>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/157280353> .
<http://webisa.webdatacommons.org/157280353>	<http://www.w3.org/ns/prov#value>	"At step 304, the device identifies an R-wave on the ventricular channel and determines its amplitude and other characteristics." .