With no explanation, label each line with "other-disease", "O", "other-medical", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
However
,
there
are
two
possible
causes
of
the
corneal
inflammatory
response
:
an
infection
and/or
an
immunological
response
,
such
as
a
hypersensitivity
type
reaction
,
or
(
rarely
)
Cogan
syndrome
.
However:O
,:O
there:O
are:O
two:O
possible:O
causes:O
of:O
the:O
corneal:other-disease
inflammatory:other-disease
response:other-disease
::O
an:O
infection:O
and/or:O
an:O
immunological:other-medical
response:other-medical
,:O
such:O
as:O
a:O
hypersensitivity:other-medical
type:other-medical
reaction:other-medical
,:O
or:O
(:O
rarely:O
):O
Cogan:other-disease
syndrome:other-disease
.:O