<http://webisa.webdatacommons.org/374739043>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/374739043>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<slideshare.net> .
<http://webisa.webdatacommons.org/prov/425331195>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/374739043> .
<http://webisa.webdatacommons.org/374739043>	<http://www.w3.org/ns/prov#value>	"A medium is a substance or material which carries a wave Ex: slinky coils, water, air, earth 5." .
<http://webisa.webdatacommons.org/prov/105208069>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/374739043> .