<http://webisa.webdatacommons.org/147751064>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
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<http://webisa.webdatacommons.org/prov/160674036>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/147751064> .
<http://webisa.webdatacommons.org/147751064>	<http://www.w3.org/ns/prov#value>	"The operator indicates the desired location of the focal point of ultrasound transducer 80 by means of an input device 120 which can be a three-dimensional pointing device such as a track ball or a mouse." .
<http://webisa.webdatacommons.org/prov/302535284>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/147751064> .