With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Even
though
one
year
later
the
trains
were
admitted
to
service
again
,
DB
judged
their
operation
to
be
overly
expensive
.
Even:O
though:O
one:O
year:O
later:O
the:O
trains:O
were:O
admitted:O
to:O
service:O
again:O
,:O
DB:organization-company
judged:O
their:O
operation:O
to:O
be:O
overly:O
expensive:O
.:O