Assertion: trachea | /r/CapableOf | split into left and right main bronchi
Facets:
value: at the 1st bifurcation
type: TEMPORAL
value: at the level of thoracic vertebrae
type: LOCATION
Source sentences:
text: At the 1st bifurcation (at the level of thoracic vertebrae Th3/Th4), the trachea splits into the left and right main bronchi.