Chordates -LRB- phylum Chordata -RRB- are a group of animals that includes the vertebrates , together with several closely related invertebrates .
The group includes vertebrates , with some closely related invertebrates .
The group includes vertebrates , with some closely related invertebrates .
Use simpler wording: Chordates -LRB- phylum Chordata -RRB- are a group of animals that includes the vertebrates , together with several closely related invertebrates . Output: