With no explanation, label each line with "O", "organization-government/governmentagency", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
served
at
the
Cambridge
Research
Center
as
Director
of
the
Geophysics
Directorate
(
1951-1954
)
and
at
the
United
States
Weather
Bureau
as
Director
of
the
Environmental
Data
Service
(
1954-1966
)
.
He:O
served:O
at:O
the:O
Cambridge:organization-education
Research:organization-education
Center:organization-education
as:O
Director:O
of:O
the:O
Geophysics:organization-education
Directorate:organization-education
(:O
1951-1954:O
):O
and:O
at:O
the:O
United:organization-government/governmentagency
States:organization-government/governmentagency
Weather:organization-government/governmentagency
Bureau:organization-government/governmentagency
as:O
Director:O
of:O
the:O
Environmental:organization-government/governmentagency
Data:organization-government/governmentagency
Service:organization-government/governmentagency
(:O
1954-1966:O
):O
.:O