Assertion: diatom's shell | /r/HasProperty | marked by depression
Facets:
Source sentences:
text: These shells are marked by minute pores or depressions that allow the living organism access to its environment.
text: These shells are marked by minute pores or depressions that allow the living organism access to its environment.
text: These shells are marked by minute pores or depressions that allow the living organism access to its environment.