Assertion: zither's string | /r/MadeOf | steel
Facets:
value: generally
type: DEGREE
Source sentences:
text: Sympathetic strings are generally made of thin brass or steel, and their vibration reinforces the upper harmonics, thus producing a bright, silvery sound.
text: The strings are made of steel and have varying diameters.
text: The strings are made of steel and have varying diameters.