With no explanation, label each line with "O", "product-train", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
8444
was
renumbered
back
to
844
.
8444:O
was:O
renumbered:O
back:O
to:O
844:product-train
.:O