With no explanation, label each line with "product-other", "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
There
were
some
half-experimental
small
series
like
VL82
,
which
could
switch
from
AC
to
DC
and
were
used
in
small
amounts
around
the
city
of
Kharkov
in
Ukraine
.
There:O
were:O
some:O
half-experimental:O
small:O
series:O
like:O
VL82:product-other
,:O
which:O
could:O
switch:O
from:O
AC:O
to:O
DC:O
and:O
were:O
used:O
in:O
small:O
amounts:O
around:O
the:O
city:O
of:O
Kharkov:location-GPE
in:O
Ukraine:location-GPE
.:O