With no explanation, label each line with "building-other", "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
bridges
that
stand
today
are
often
of
great
historical
and/or
engineering
interest
—
for
example
the
world
's
first
iron
bridge
,
The
Iron
Bridge
,
built
from
cast
iron
crosses
the
River
Severn
at
Ironbridge
Gorge
.
The:O
bridges:O
that:O
stand:O
today:O
are:O
often:O
of:O
great:O
historical:O
and/or:O
engineering:O
interest:O
—:O
for:O
example:O
the:O
world:O
's:O
first:O
iron:O
bridge:O
,:O
The:O
Iron:building-other
Bridge:building-other
,:O
built:O
from:O
cast:O
iron:O
crosses:O
the:O
River:location-bodiesofwater
Severn:location-bodiesofwater
at:O
Ironbridge:building-other
Gorge:building-other
.:O