Answer:
chiron is a centaur - noblest and wisest
gods of Olympus - Zeus, Poseidon, athena
hades dog - Cerberus or something similar
ferryman - charon is the ferryman
Highlighting is most useful I believe
Through hiding its literal meaning until the final lines, the poem manages to capture something of the excitement—and perhaps even the danger—of love. The speaker makes the difficult journey to meet this lover precisely because love is worth fighting for.