With no explanation, label each line with "O", "other-chemicalthing", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Dronabinol
demonstrates
significant
improvement
in
sleep
apnea
scores
.
Dronabinol:other-chemicalthing
demonstrates:O
significant:O
improvement:O
in:O
sleep:O
apnea:O
scores:O
.:O