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 ":".
He
graduated
in
May
1948
,
and
began
working
as
a
research
officer
with
the
Bureau
of
Census
and
Statistics
in
1946
.
He:O
graduated:O
in:O
May:O
1948:O
,:O
and:O
began:O
working:O
as:O
a:O
research:O
officer:O
with:O
the:O
Bureau:organization-government/governmentagency
of:organization-government/governmentagency
Census:organization-government/governmentagency
and:organization-government/governmentagency
Statistics:organization-government/governmentagency
in:O
1946:O
.:O