With no explanation, label each line with "O", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
June
1909
,
a
flag-raising
ceremony
was
held
,
celebrating
the
Cubs
second
consecutive
World
Series
.
In:O
June:O
1909:O
,:O
a:O
flag-raising:O
ceremony:O
was:O
held:O
,:O
celebrating:O
the:O
Cubs:event-sportsevent
second:O
consecutive:O
World:O
Series:O
.:O