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 ":".
In
support
of
these
operations
in
December
the
brigade
moved
into
the
Sinai
;
their
first
large
battle
came
during
the
Battle
of
Magdhaba
on
23
December
,
two
days
after
the
brigade
was
formed
.
In:O
support:O
of:O
these:O
operations:O
in:O
December:O
the:O
brigade:O
moved:O
into:O
the:O
Sinai:O
;:O
their:O
first:O
large:O
battle:O
came:O
during:O
the:O
Battle:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
Magdhaba:event-attack/battle/war/militaryconflict
on:O
23:O
December:O
,:O
two:O
days:O
after:O
the:O
brigade:O
was:O
formed:O
.:O