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 ":".
His
work
is
known
for
its
curvilinear
design
.
His:O
work:O
is:O
known:O
for:O
its:O
curvilinear:O
design:O
.:O