the winged horse of the Muses , who sprang from the blood of Medusa when she was slain , and with a blow of his hoof caused the fountain of the Muses ( Hippocrene ) to spring from Mount Helicon. Bellerophon afterwards caught him at the fountain of Pirene , near Corinth , and , with the aid of his hoofs , destroyed the Chimœra. But when Bellerophon wished to fly on the back of Pegasus to heaven , the latter threw him off and ascended to the skies alone , where he was changed into a constellation

http://lila-erc.eu/data/lexicalResources/LewisShort/id/LexicalSense/n34376.0 an entity of type: LexicalSense

the winged horse of the Muses , who sprang from the blood of Medusa when she was slain , and with a blow of his hoof caused the fountain of the Muses ( Hippocrene ) to spring from Mount Helicon. Bellerophon afterwards caught him at the fountain of Pirene , near Corinth , and , with the aid of his hoofs , destroyed the Chimœra. But when Bellerophon wished to fly on the back of Pegasus to heaven , the latter threw him off and ascended to the skies alone , where he was changed into a constellation 
the winged horse of the Muses , who sprang from the blood of Medusa when she was slain , and with a blow of his hoof caused the fountain of the Muses ( Hippocrene ) to spring from Mount Helicon. Bellerophon afterwards caught him at the fountain of Pirene , near Corinth , and , with the aid of his hoofs , destroyed the Chimœra. But when Bellerophon wished to fly on the back of Pegasus to heaven , the latter threw him off and ascended to the skies alone , where he was changed into a constellation 

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