Assertion: cord's blood vessel | /r/HasProperty | one vein
Facets:
Source sentences:
text: Most babies’ umbilical cords have three blood vessels: one vein, which brings nutrients from the placenta to baby, and two arteries that bring waste back to the placenta.
text: It has three blood vessels: one vein that carries food and oxygen from the placenta to your baby and two arteries that carry waste from your baby back to the placenta.