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 ":".
After
a
brief
fight
,
the
Union
garrison
of
the
town
,
two
militia
regiments
,
was
routed
by
fire
from
Confederate
artillery
.
After:O
a:O
brief:O
fight:O
,:O
the:O
Union:O
garrison:O
of:O
the:O
town:O
,:O
two:O
militia:O
regiments:O
,:O
was:O
routed:O
by:O
fire:O
from:O
Confederate:O
artillery:O
.:O