Assertion: oyster's shell | /r/HasProperty | concave
Facets:
value: deeply
type: DEGREE
Source sentences:
text: Left shell is deeply concave and fixed to the substratum, the right being flat with rougher edges and sitting inside the left acting as a lid.
text: Left shell is deeply concave and fixed to the substratum, the right being flat with rougher edges and sitting inside the left acting as a lid.