With no explanation, label each line with "O", "other-chemicalthing", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
accuracy
of
patch
testing
for
titanium
allergy
,
in
particular
,
seems
to
be
variable
;
the
Mayo
clinic
failed
to
find
any
positive
reactions
to
titanium
in
over
a
decade
,
despite
several
published
cases
of
titanium
allergy
.
The:O
accuracy:O
of:O
patch:O
testing:O
for:O
titanium:O
allergy:O
,:O
in:O
particular:O
,:O
seems:O
to:O
be:O
variable:O
;:O
the:O
Mayo:organization-other
clinic:organization-other
failed:O
to:O
find:O
any:O
positive:O
reactions:O
to:O
titanium:other-chemicalthing
in:O
over:O
a:O
decade:O
,:O
despite:O
several:O
published:O
cases:O
of:O
titanium:other-chemicalthing
allergy:O
.:O