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 ":".
Polaris
is
driven
away
after
the
Parasite
attacks
him
.
Polaris:person-other
is:O
driven:O
away:O
after:O
the:O
Parasite:person-other
attacks:O
him:O
.:O