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
became
a
member
of
the
inner
circle
of
Boris
Yeltsin
,
and
was
one
of
the
leaders
of
his
campaign
staff
in
1996
.
He:O
became:O
a:O
member:O
of:O
the:O
inner:O
circle:O
of:O
Boris:organization-government/governmentagency
Yeltsin:organization-government/governmentagency
,:O
and:O
was:O
one:O
of:O
the:O
leaders:O
of:O
his:O
campaign:O
staff:O
in:O
1996:O
.:O