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 ":".
On
2
November
1914
,
the
Ottoman
Empire
opened
the
Middle
Eastern
theater
of
World
War
I
by
entering
hostilities
on
the
side
of
the
Central
Powers
and
against
the
Allies
.
On:O
2:O
November:O
1914:O
,:O
the:O
Ottoman:location-GPE
Empire:location-GPE
opened:O
the:O
Middle:O
Eastern:O
theater:O
of:O
World:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
I:event-attack/battle/war/militaryconflict
by:O
entering:O
hostilities:O
on:O
the:O
side:O
of:O
the:O
Central:O
Powers:O
and:O
against:O
the:O
Allies:organization-other
.:O