Assertion: stringed instrument's string | /r/HasProperty | raised one half-step
Facets:
value: to give a brighter tone
type: PURPOSE
Source sentences:
text: In Mozart's Sinfonia Concertante in E-flat major (K. 364), all the strings of the solo viola are raised one half-step, ostensibly to give the instrument a brighter tone so the solo violin does not overshadow it.