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 ":".
Blood
pressure
then
spontaneously
and
rapidly
returns
to
normal
,
so
the
period
of
hypotension
and
symptoms
is
short
(
&
lt
;
30
s
)
.
Blood:O
pressure:O
then:O
spontaneously:O
and:O
rapidly:O
returns:O
to:O
normal:O
,:O
so:O
the:O
period:O
of:O
hypotension:other-disease
and:O
symptoms:O
is:O
short:O
(:O
&:O
lt:O
;:O
30:O
s:O
):O
.:O