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 ":".
These
also
had
a
more
vertical
tail
fin
,
used
for
a
powerful
propulsive
stroke
.
These:O
also:O
had:O
a:O
more:O
vertical:O
tail:O
fin:O
,:O
used:O
for:O
a:O
powerful:O
propulsive:O
stroke:O
.:O