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 ":".
After
a
break
of
one
year
in
2009
,
she
decided
to
return
to
the
ring
to
give
the
Olympic
Games
a
try
.
After:O
a:O
break:O
of:O
one:O
year:O
in:O
2009:O
,:O
she:O
decided:O
to:O
return:O
to:O
the:O
ring:O
to:O
give:O
the:O
Olympic:event-sportsevent
Games:event-sportsevent
a:O
try:O
.:O