With no explanation, label each line with "art-broadcastprogram", "O", "person-director", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Gwyn
Winfield
,
editorial
director
at
``
CBRNe
World
``
,
analysed
some
videos
from
the
day
of
the
attack
and
wrote
on
the
magazine
's
website
:
``
It
is
difficult
to
define
[
an
]
agent
by
the
signs
and
symptoms
.
Gwyn:person-director
Winfield:person-director
,:person-director
editorial:O
director:O
at:O
``:O
CBRNe:art-broadcastprogram
World:art-broadcastprogram
``:O
,:O
analysed:O
some:O
videos:O
from:O
the:O
day:O
of:O
the:O
attack:O
and:O
wrote:O
on:O
the:O
magazine:O
's:O
website:O
::O
``:O
It:O
is:O
difficult:O
to:O
define:O
[:O
an:O
]:O
agent:O
by:O
the:O
signs:O
and:O
symptoms:O
.:O