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
renovation
also
updated
the
stairwells
to
improve
the
look
The:O
renovation:O
also:O
updated:O
the:O
stairwells:O
to:O
improve:O
the:O
look:O