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 ":".
They
make
love
after
dinner
.
They:O
make:O
love:O
after:O
dinner:O
.:O