Assertion: coffin's feature | /r/HasProperty | underdeveloped upper jawbone
Facets:
Source sentences:
text: Characteristic facial features may include an underdeveloped upper jawbone (maxillary hypoplasia), an abnormally prominent brow, downslanting eyelid folds (palpebral fissures), widely spaced eyes (hypertelorism), large ears, and/or unusually thick eyebrows.