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 ":".
His
extra-curricular
activities
included
wrestling
,
track
,
and
gymnastics
.
His:O
extra-curricular:O
activities:O
included:O
wrestling:O
,:O
track:O
,:O
and:O
gymnastics:O
.:O