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 ":".
The
viaduct
is
high
and
is
carried
on
37
semi-circular
arches
,
each
of
,
surmounted
by
balustrades
,
spanning
a
total
length
of
.
The:O
viaduct:O
is:O
high:O
and:O
is:O
carried:O
on:O
37:O
semi-circular:O
arches:O
,:O
each:O
of:O
,:O
surmounted:O
by:O
balustrades:O
,:O
spanning:O
a:O
total:O
length:O
of:O
.:O