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 ":".
Aerobic
degradation
forms
catechol
.
Aerobic:O
degradation:O
forms:O
catechol:O
.:O