With no explanation, label each line with "O", "person-athlete", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
At
Nationals
,
following
a
rough
competition
,
Boyce
was
twenty-seventh
in
the
all-around
.
At:O
Nationals:O
,:O
following:O
a:O
rough:O
competition:O
,:O
Boyce:person-athlete
was:O
twenty-seventh:O
in:O
the:O
all-around:O
.:O