<http://webisa.webdatacommons.org/prov/180712621>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/241000558> .
<http://webisa.webdatacommons.org/241000558>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<stackexchange.com> .
<http://webisa.webdatacommons.org/241000558>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/241000558>	<http://www.w3.org/ns/prov#value>	"Purcell has a good discussion on this and drives home very effectively the comparison with whether a material is solid or liquid: that too depends completely on the timescales involved." .