Assertion: marimba's resonator | /r/MadeOf | galvanized air ducting
Facets:
value: for b
type: PURPOSE
value: for the low f
type: PURPOSE
value: for g
type: PURPOSE
Source sentences:
text: The resonators are made of galvanized air ducting, 10" for the low F and G, 9" for the low A and B, 8" for the low C, D and E, 7" for the F', G' and A', 6" for the high B', C', D' and E'.