With no explanation, label each line with "O", "product-food", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
moderate
doses
,
caffeine
has
been
associated
with
reduced
symptoms
of
depression
and
lower
suicide
risk
.
In:O
moderate:O
doses:O
,:O
caffeine:product-food
has:O
been:O
associated:O
with:O
reduced:O
symptoms:O
of:O
depression:O
and:O
lower:O
suicide:O
risk:O
.:O