Assertion: degree tear | /r/HasProperty | subdivided into three subcategories
Facets:
value: further
type: MANNER
Source sentences:
text: Third-degree tear: fourchette, perineal skin, vaginal mucosa, muscles, and anal sphincter are torn; third-degree tears may be further subdivided into three subcategories:  3a: partial tear of the external anal sphincter involving less than 50% thickness 3b: greater than 50% tear of the external anal sphincter