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 ":".
Side
effects
of
constipation
or
diarrhoea
are
more
common
with
the
use
of
oral
iron
than
intravenous
iron
.
Side:O
effects:O
of:O
constipation:O
or:O
diarrhoea:O
are:O
more:O
common:O
with:O
the:O
use:O
of:O
oral:O
iron:O
than:O
intravenous:O
iron:other-chemicalthing
.:O