With no explanation, label each line with "other-livingthing", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
They
are
longer-billed
,
lighter-bodied
,
and
more
streamlined
than
gulls
,
and
their
long
tails
and
long
narrow
wings
give
them
an
elegance
in
flight
.
They:O
are:O
longer-billed:O
,:O
lighter-bodied:O
,:O
and:O
more:O
streamlined:O
than:O
gulls:other-livingthing
,:O
and:O
their:O
long:O
tails:O
and:O
long:O
narrow:O
wings:O
give:O
them:O
an:O
elegance:O
in:O
flight:O
.:O