Simplify the following text for a Grade 7 native English-speaking person.
Original: Thus , in later versions of the story the ram is said to have been the offspring of the sea god Poseidon and Themisto ( less often , Nephele or Theophane ) .
Simplified: In later versions the ram is said to have been the child of the sea god Poseidon and Themisto ( less often , Nephele or Theophane ) .