With no explanation, label each line with "O", "organization-sportsteam", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
is
currently
the
captain
of
the
Tractor
.
He:O
is:O
currently:O
the:O
captain:O
of:O
the:O
Tractor:organization-sportsteam
.:O