With no explanation, label each line with "O", "location-GPE", "event-attack/battle/war/militaryconflict", "product-ship", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other" or "art-painting" preceded by ":".
In
``
Events
in
Sevastopol
``
he
described
the
destruction
of
the
cruiser
``
Ochakov
``
,
which
he
Kuprin
witnessed
in
Balaklava
.
In:O
``:O
Events:event-attack/battle/war/militaryconflict
in:event-attack/battle/war/militaryconflict
Sevastopol:event-attack/battle/war/militaryconflict
``:O
he:O
described:O
the:O
destruction:O
of:O
the:O
cruiser:O
``:O
Ochakov:product-ship
``:O
,:O
which:O
he:O
Kuprin:person-other
witnessed:O
in:O
Balaklava:location-GPE
.:O