With no explanation, label each line with "other-disease", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Therefore
,
by
inhibiting
osteoclasts
,
it
prevents
osteoporosis
.
Therefore:O
,:O
by:O
inhibiting:O
osteoclasts:O
,:O
it:O
prevents:O
osteoporosis:other-disease
.:O