Assertion: oboe | /r/HasProperty | the standard
Facets:
value: for tuning
type: PURPOSE
Source sentences:
text: Therefore, it would appear that the other instruments in a performance must be made to match, and that is the explanation of why the oboe is the standard for tuning.
text: Therefore the other instruments in a performance must be made to match, and that is why the oboe is the standard for tuning.