Assertion: skull's structure | /r/HasProperty | a group of four
Facets:
value: above the eyes
type: LOCATION
Source sentences:
text: Structure of the Paranasal Sinuses Paranasal sinuses are a group of four, paired, air-filled spaces that surround the nasal cavity (maxillary sinuses), above the eyes (frontal sinuses), between the eyes (ethmoid sinuses), and behind the eyes (sphenoid sinuses).