With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
In
2008
,
she
was
diagnosed
with
lower
back
inflammation
and
was
forced
to
stop
playing
competitive
tennis
.
In:O
2008:O
,:O
she:O
was:O
diagnosed:O
with:O
lower:O
back:O
inflammation:O
and:O
was:O
forced:O
to:O
stop:O
playing:O
competitive:O
tennis:O
.:O