With no explanation, label each line with "O", "event-election", "organization-politicalparty", "person-politician", "location-GPE", "art-broadcastprogram", "art-film", "art-music", "art-other" or "art-painting" preceded by ":".
The
1968
presidential
campaign
of
Richard
Nixon
,
the
36th
Vice
President
of
the
United
States
,
began
when
Nixon
,
the
Republican
nominee
of
1960
,
formally
announced
his
candidacy
,
following
a
year
's
preparation
and
five
years
'
political
reorganization
after
defeats
in
the
1960
presidential
election
and
the
1962
California
gubernatorial
election
.
The:O
1968:O
presidential:O
campaign:O
of:O
Richard:person-politician
Nixon:person-politician
,:O
the:O
36th:O
Vice:event-election
President:event-election
of:event-election
the:event-election
United:event-election
States:event-election
,:O
began:O
when:O
Nixon:person-politician
,:O
the:O
Republican:organization-politicalparty
nominee:O
of:O
1960:O
,:O
formally:O
announced:O
his:O
candidacy:O
,:O
following:O
a:O
year:O
's:O
preparation:O
and:O
five:O
years:O
':O
political:O
reorganization:O
after:O
defeats:O
in:O
the:O
1960:O
presidential:O
election:O
and:O
the:O
1962:O
California:location-GPE
gubernatorial:O
election:O
.:O