Original sentence: He healswhen he steps into the adjoining river and is revealed as the son of Poseidon when Poseidon's trident appears above his head.Percy, accompanied by Annabeth and Grover, decide to travel west to reach the entrance toUnderworld in Los Angeles
Edited sentence: He heals when he steps into the adjoining river and is revealed as the son of Poseidon when Poseidon's trident appears above his head.Percy, accompanied by Annabeth and Grover, decide to travel west to reach the entrance to the Underworld in Los Angeles