With no explanation, label each line with "O", "organization-government/governmentagency", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
1972
,
Caulfield
was
appointed
as
assistant
director
of
criminal
enforcement
at
the
U.S.
Bureau
of
Alcohol
,
Tobacco
,
Firearms
and
Explosives
(
ATF
)
.
In:O
1972:O
,:O
Caulfield:person-politician
was:O
appointed:O
as:O
assistant:O
director:O
of:O
criminal:O
enforcement:O
at:O
the:O
U.S.:organization-government/governmentagency
Bureau:organization-government/governmentagency
of:organization-government/governmentagency
Alcohol:organization-government/governmentagency
,:organization-government/governmentagency
Tobacco:organization-government/governmentagency
,:organization-government/governmentagency
Firearms:organization-government/governmentagency
and:organization-government/governmentagency
Explosives:organization-government/governmentagency
(:O
ATF:organization-government/governmentagency
):O
.:O