<http://webisa.webdatacommons.org/prov/285973244> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/189650737> . <http://webisa.webdatacommons.org/189650737> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/189650737> <http://www.w3.org/ns/prov#value> "I wonder what the effect would be if the soundboard was made of something other than wood, like glass or quartz." . <http://webisa.webdatacommons.org/189650737> <http://www.w3.org/ns/prov#wasQuotedFrom> <pianosociety.com> .