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<http://webisa.webdatacommons.org/prov/97365145>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/74827575> .
<http://webisa.webdatacommons.org/74827575>	<http://www.w3.org/ns/prov#value>	"FIG. 2a is a perspective, partially cut-away view of an expandable sac in a retracted configuration; [0077] d." .
<http://webisa.webdatacommons.org/74827575>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .