With no explanation, label each line with "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
They
were
detained
by
the
colonial
authorities
in
1948
following
disturbances
that
led
to
the
killing
of
three
World
War
II
veterans
.
They:O
were:O
detained:O
by:O
the:O
colonial:O
authorities:O
in:O
1948:O
following:O
disturbances:O
that:O
led:O
to:O
the:O
killing:O
of:O
three:O
World:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
II:event-attack/battle/war/militaryconflict
veterans:O
.:O