With no explanation, label each line with "organization-media/newspaper", "O", "person-artist/author", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
On
the
occasion
of
the
death
of
the
Ribnikar
brothers
,
Isidora
Sekulić
wrote
a
poem
published
in
Politika
of
September
1914
.
On:O
the:O
occasion:O
of:O
the:O
death:O
of:O
the:O
Ribnikar:person-other
brothers:O
,:O
Isidora:person-artist/author
Sekulić:person-artist/author
wrote:O
a:O
poem:O
published:O
in:O
Politika:organization-media/newspaper
of:O
September:O
1914:O
.:O