<http://webisa.webdatacommons.org/prov/266847754>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/216125016> .
<http://webisa.webdatacommons.org/216125016>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/216125016>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
<http://webisa.webdatacommons.org/216125016>	<http://www.w3.org/ns/prov#value>	"The following examples illustrate certain aspects of the present invention, particularly with respect to the cement compositions here proposed, and the characteristics of various of the critical additives used in such compositions." .