With no explanation, label each line with "O", "organization-government/governmentagency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
After
the
briefing
,
one
of
the
CIA
agents
told
everybody
they
``
were
never
there
and
this
never
happened
,
''
adding
they
were
fearful
of
public
panic
.
After:O
the:O
briefing:O
,:O
one:O
of:O
the:O
CIA:organization-government/governmentagency
agents:O
told:O
everybody:O
they:O
``:O
were:O
never:O
there:O
and:O
this:O
never:O
happened:O
,:O
'':O
adding:O
they:O
were:O
fearful:O
of:O
public:O
panic:O
.:O