Assertion: umbilical cord's artery | /r/CapableOf | form cylindrical helix
Facets:
value: around the umbilical vein
type: LOCATION
value: commonly
type: TEMPORAL
Source sentences:
text: The two umbilical arteries commonly form a cylindrical helix around the umbilical vein (Figure 3a).
text: The two umbilical arteries commonly form a cylindrical helix around the umbilical vein (Figure 3a).