Assertion: umbilical cord | /r/HasProperty | buried within wharton's jelly
Facets:
value: for the exchange
type: PURPOSE
Source sentences:
text: It normally contains three vessels, two arteries (Umbilical artery) and one vein (Umbilical vein), buried within Wharton's jelly, for the exchange of nutrient- and oxygen-rich blood between the embryo and placenta.