<http://webisa.webdatacommons.org/262944385>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/262944385>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/262944385>	<http://www.w3.org/ns/prov#value>	"FIG. 4 is a flow chart for the main program for the ultrasonic level measurement system of the invention." .
<http://webisa.webdatacommons.org/prov/470664735>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/262944385> .