With no explanation, label each line with "O", "person-athlete", "organization-sportsteam", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
returned
to
coach
the
club
in
2013
,
assisted
by
former
Bulldogs
team-mate
Brent
Sherwin
.
He:O
returned:O
to:O
coach:O
the:O
club:O
in:O
2013:O
,:O
assisted:O
by:O
former:O
Bulldogs:organization-sportsteam
team-mate:O
Brent:person-athlete
Sherwin:person-athlete
.:O