Rewritten sentence:
Ulysses is prosecuted for being a fraud. He had constructed the Trojan horse, The horse had assisted the Greeks damage Troy. Dante is testimony to all of this misery,  w hich shows compassion. Dante corresponds to the numerous souls being prosecuted, for  this he goes to great lengths. He discovers who they were,  h e continues so even if they were condemned to Hell. His  concern shows kindness towards others.