Assertion: trachea's ring | /r/CapableOf | strengthen the trachea
Facets:
Source sentences:
text: The rings of cartilage strengthen the trachea so that it does not collapse, but remains open so that air can get through it.
text: (The cartilaginous rings are incomplete because this allows the trachea to collapse slightly to allow food to pass down the esophagus to give support The rings of cartilage strengthen the trachea so that it does not collapse, but remains open so that air can get through it.