With no explanation, label each line with "O", "person-scholar", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Professor
of
the
Institute
,
A.
V.
Wulf
was
the
chairman
of
the
group
working
on
the
electrification
of
the
Northern
Region
of
RSFSR
.
Professor:O
of:O
the:O
Institute:O
,:O
A.:person-scholar
V.:person-scholar
Wulf:person-scholar
was:O
the:O
chairman:O
of:O
the:O
group:O
working:O
on:O
the:O
electrification:O
of:O
the:O
Northern:organization-other
Region:organization-other
of:organization-other
RSFSR:organization-other
.:O