With no explanation, label each line with "location-GPE", "O", "organization-politicalparty", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
represented
the
Liberal
Party
of
Norway
at
the
Norwegian
Parliament
during
four
electoral
periods
,
from
1958
to
1973
,
and
was
leader
for
the
party
from
1964
to
1970
.
He:O
represented:O
the:O
Liberal:organization-politicalparty
Party:organization-politicalparty
of:organization-politicalparty
Norway:organization-politicalparty
at:O
the:O
Norwegian:location-GPE
Parliament:O
during:O
four:O
electoral:O
periods:O
,:O
from:O
1958:O
to:O
1973:O
,:O
and:O
was:O
leader:O
for:O
the:O
party:O
from:O
1964:O
to:O
1970:O
.:O