With no explanation, label each line with "O", "building-sportsfacility", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
After
a
29-year
absence
,
night
football
returned
to
McAndrew
Stadium
in
2002
.
After:O
a:O
29-year:O
absence:O
,:O
night:O
football:O
returned:O
to:O
McAndrew:building-sportsfacility
Stadium:building-sportsfacility
in:O
2002:O
.:O