<http://webisa.webdatacommons.org/261406257>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/261406257>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<askthephysicist.com> .
<http://webisa.webdatacommons.org/prov/161307121>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/261406257> .
<http://webisa.webdatacommons.org/261406257>	<http://www.w3.org/ns/prov#value>	"Do they travel at different speeds from one another in a medium such as water or glass?" .
<http://webisa.webdatacommons.org/prov/156033167>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/261406257> .