Assertion: sponge's cell | /r/HasProperty | nematocyst
Facets:
Source sentences:
text: All Cnidarians have stinging cells (nematocysts)
text: Cnidaria are invertebrates (they do not have a backbone) and all have specialized cells called nematocysts that help them capture prey and defend themselves.
text: Being static, they wait for prey to come to them and then catch them using stinging cells, known as nematocysts, present on their tentacles.