With no explanation, label each line with "organization-other", "location-GPE", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
In
what
became
known
as
the
Operation
Ostra
Brama
,
the
V
Brigade
was
to
attack
the
Wilno
suburb
of
Zwierzyniec
in
cooperation
with
the
advancing
units
of
the
3rd
Belorussian
Front
.
In:O
what:O
became:O
known:O
as:O
the:O
Operation:event-attack/battle/war/militaryconflict
Ostra:event-attack/battle/war/militaryconflict
Brama:event-attack/battle/war/militaryconflict
,:O
the:O
V:organization-other
Brigade:organization-other
was:O
to:O
attack:O
the:O
Wilno:location-GPE
suburb:O
of:O
Zwierzyniec:location-GPE
in:O
cooperation:O
with:O
the:O
advancing:O
units:O
of:O
the:O
3rd:O
Belorussian:organization-other
Front:organization-other
.:O