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
is
perhaps
his
most
well-known
artwork
.
It:O
is:O
perhaps:O
his:O
most:O
well-known:O
artwork:O
.:O