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
later
works
of
the
1980s
were
very
personal
reflections
.
His:O
later:O
works:O
of:O
the:O
1980s:O
were:O
very:O
personal:O
reflections:O
.:O