Assertion: blood vessel | /r/HasProperty | multi-layered tubes
Facets:
Source sentences:
text: Blood vessels are multi-layered tubes to take blood from the heart in thicker, higher pressure arteries and back to the heart in thinner, flexible and lower-pressure veins.
text: Blood vessels are multi-layered tubes to take blood from the heart in thicker, higher pressure arteries and back to the heart in thinner, flexible and lower-pressure veins.