With no explanation, label each line with "product-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
Institute
started
working
again
in
April
1920
when
it
became
a
part
of
the
planning
team
for
the
GOELRO
plan
.
The:O
Institute:O
started:O
working:O
again:O
in:O
April:O
1920:O
when:O
it:O
became:O
a:O
part:O
of:O
the:O
planning:O
team:O
for:O
the:O
GOELRO:product-other
plan:O
.:O