With no explanation, label each line with "person-politician", "O", "organization-government/governmentagency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
served
in
the
White
House
as
a
special
assistant
to
the
president
and
director
of
presidential
appointments
under
Ronald
Reagan
in
1981–1982
.
He:O
served:O
in:O
the:O
White:organization-government/governmentagency
House:organization-government/governmentagency
as:O
a:O
special:O
assistant:O
to:O
the:O
president:O
and:O
director:O
of:O
presidential:O
appointments:O
under:O
Ronald:person-politician
Reagan:person-politician
in:O
1981–1982:O
.:O