Assertion: mediastinum's aorta | /r/CapableOf | produce characteristic aortic knob
Facets:
Source sentences:
text: The left border of the cardiovascular silhouette is formed by: (1) the arch of the aorta , which produces a characteristic aortic knob ; (2) the pulmonary trunk ; (3) the left auricle ; (4) the left ventricle .