Assertion: flatfish | /r/HasAspect | three groups
Facets:
Source sentences:
text: Flatfishes are divided into three groups: the soles, families Soleidae, Cynoglossidae, and Achiridae; and the flounders (including the halibuts and others), families Achiropsettidate, Bothidae, Citharidae, Paralichthyidae, Pleuronectidae, Samaridae, and Scophthalmidae, and the spiny turbots, family Psettodidae.