Assertion: treble concertina | /r/CapableOf | span 3 1/2 or 4 octaves
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: English-system treble and tenor-treble concertinas usually span 3 1/2 or 4 octaves.
text: English-system treble and tenor-treble concertinas usually span 3 1/2 or 4 octaves.