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 ":".
The
most
common
type
of
pituitary
tumour
is
a
prolactinoma
which
hypersecretes
prolactin
.
The:O
most:O
common:O
type:O
of:O
pituitary:other-disease
tumour:other-disease
is:O
a:O
prolactinoma:O
which:O
hypersecretes:O
prolactin:O
.:O