With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Fire
crews
from
three
counties
fought
the
blaze
.
Fire:O
crews:O
from:O
three:O
counties:O
fought:O
the:O
blaze:O
.:O