Assertion: concertina's bellow | /r/HasProperty | operated
Facets:
Source sentences:
text: The term is so applied because such instruments are generally in the shape of a rectangular prism or box, and the bellows is operated by squeezing in and drawing out.
text: The term is so applied because such instruments are generally in the shape of a rectangular prism or box, and the bellows is operated by squeezing in and drawing out.