Assertion: worm's gut | /r/HasProperty | complete
Facets:
Source sentences:
text: Proboscis worms also lack a coelom, but they are more advanced than flatworms, in terms of evolution, because they have a complete gut with a separate mouth and anus and a true circulatory system.
text: Unlike the flatworms, however, the ribbon worms have a complete gut and a circulatory system.