With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Blackjack
becomes
Percy
's
personal
steed
and
companion
.
Blackjack:person-other
becomes:O
Percy:person-other
's:O
personal:O
steed:O
and:O
companion:O
.:O