<http://webisa.webdatacommons.org/447307180>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<childrensmusicworkshop.com> .
<http://webisa.webdatacommons.org/447307180>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/260931778>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/447307180> .
<http://webisa.webdatacommons.org/447307180>	<http://www.w3.org/ns/prov#value>	"At one time in the 19th century trombones had valves like other brass instruments." .