Simplify the following text for a Grade 5 native English-speaking person.
Original: The Theogony ( Greek : Î Î Î Î Î Î 1\/2 Î Î , TheogonÃ a , the birth of the gods ) is a poem by Hesiod ( 8th-7th century BC ) describing the origins and genealogies of the gods of the ancient Greeks , composed circa 700 BC .
Simplified: The Theogony ( Greek : Î Î Î Î Î Î 1\/2 Î Î , TheogonÃ a , the birth of the gods ) is a poem by Hesiod .