Assertion: whistle | /r/HasProperty | followed by whistle
Facets:
value: in c
type: LOCATION
value: in f
type: LOCATION
Source sentences:
text: Whistles are available in all 12 chromatic keys; however, the most common whistles are pitched in D and G, followed by whistles in C and F, and then B♭ and E♭, with other keys being somewhat more rare.