<http://webisa.webdatacommons.org/prov/265386004>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/270825891> .
<http://webisa.webdatacommons.org/270825891>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
<http://webisa.webdatacommons.org/prov/141546618>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/270825891> .
<http://webisa.webdatacommons.org/270825891>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/270825891>	<http://www.w3.org/ns/prov#value>	"More specifically, R1 is a hydrogen atom, a saturated hydrocarbon group-such as alkyl or cycloalkyl, an unsaturated hydrocarbon group such as vinyl or alkenyl, or a silicon-containing hydrocarbon group such as alkylsilyl." .