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 ":".
Magnesium
citrate
is
not
recommended
for
use
in
children
and
infants
two
years
of
age
or
less
.
Magnesium:other-chemicalthing
citrate:other-chemicalthing
is:O
not:O
recommended:O
for:O
use:O
in:O
children:O
and:O
infants:O
two:O
years:O
of:O
age:O
or:O
less:O
.:O