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 ":".
It
conformed
to
modern
standards
when
it
was
built
,
but
is
now
regarded
as
a
narrow
,
outdated
roadway
.
It:O
conformed:O
to:O
modern:O
standards:O
when:O
it:O
was:O
built:O
,:O
but:O
is:O
now:O
regarded:O
as:O
a:O
narrow:O
,:O
outdated:O
roadway:O
.:O