Assertion: sponge's layer | /r/HasProperty | middle jelly-like
Facets:
Source sentences:
text: Sponges have no nervous systems, their middle jelly-like layers have large and varied populations of cells, and some types of cells in their outer layers may move into the middle layer and change their functions.
text: Their middle jelly-like layers have many different types of cells.
text: Their middle jelly-like layers have many different types of cells.
text: Their middle jelly-like layers have many different types of cells.