<http://webisa.webdatacommons.org/123624902>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
<http://webisa.webdatacommons.org/prov/463822124>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/123624902> .
<http://webisa.webdatacommons.org/123624902>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/123624902>	<http://www.w3.org/ns/prov#value>	"FIG. 4a is a graph showing the periodic type frequency response 50 of a delay line differentiator corresponding to the first summing block 28 operating upon the filtered signal on line 23 and the second delayed signal on line 27." .