Assertion: umbilical cord's vein | /r/PartOf | umbilical cord
Facets:
Source sentences:
text: C. One umbilical vein and two umbilical arteries make up the umbilical cord
text: One umbilical vein and two umbilical arteries make up the umbilical cord.
text: A) one umbilical vein and two umbilical arteries make up the umbilical cord