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 ":".
Russell
began
his
service
to
the
public
in
2008
when
he
defeated
four
opponents
in
one
of
the
most
contested
races
in
the
Oklahoma
State
Senate
that
year
.
Russell:person-politician
began:O
his:O
service:O
to:O
the:O
public:O
in:O
2008:O
when:O
he:O
defeated:O
four:O
opponents:O
in:O
one:O
of:O
the:O
most:O
contested:O
races:O
in:O
the:O
Oklahoma:organization-government/governmentagency
State:organization-government/governmentagency
Senate:organization-government/governmentagency
that:O
year:O
.:O