With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
A
thorough
investigation
ruling
out
physiological
causes
is
crucial
,
but
in
cases
where
relevant
tests
are
performed
and
no
causes
are
found
or
symptoms
do
not
match
any
known
disorders
,
a
primary
anxiety
disorder
is
possible
,
but
should
not
be
presumed
.
A:O
thorough:O
investigation:O
ruling:O
out:O
physiological:O
causes:O
is:O
crucial:O
,:O
but:O
in:O
cases:O
where:O
relevant:O
tests:O
are:O
performed:O
and:O
no:O
causes:O
are:O
found:O
or:O
symptoms:O
do:O
not:O
match:O
any:O
known:O
disorders:O
,:O
a:O
primary:O
anxiety:O
disorder:O
is:O
possible:O
,:O
but:O
should:O
not:O
be:O
presumed:O
.:O