With no explanation, label each line with "building-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Holborn
Viaduct
was
constructed
as
a
six-platform
terminus
,
with
two
island
platforms
and
two
side
platforms
,
covered
by
a
three-roof
train
shed
.
Holborn:building-other
Viaduct:building-other
was:O
constructed:O
as:O
a:O
six-platform:O
terminus:O
,:O
with:O
two:O
island:O
platforms:O
and:O
two:O
side:O
platforms:O
,:O
covered:O
by:O
a:O
three-roof:O
train:O
shed:O
.:O