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 ":".
Usually
,
however
,
the
vehicles
were
neither
modified
nor
re-marked
.
Usually:O
,:O
however:O
,:O
the:O
vehicles:O
were:O
neither:O
modified:O
nor:O
re-marked:O
.:O