Assertion: concert flute | /r/HasProperty | two octaves
Facets:
Source sentences:
text: The double contrabass flute (sometimes also called octobass flute) is pitched in the key of C, three octaves below the concert flute (two octaves below the bass flute, and one octave below the contrabass flute).
text: It is pitched in the key of C, three octaves below the concert flute (two octaves below the bass flute and one octave below the contrabass flute).