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 ":".
It
is
sometimes
used
off-label
for
the
treatment
of
fibromyalgia
.
It:O
is:O
sometimes:O
used:O
off-label:O
for:O
the:O
treatment:O
of:O
fibromyalgia:other-disease
.:O