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 ":".
As
chairman
,
he
oversees
all
the
matches
and
tournaments
that
take
place
within
the
series
and
will
sometimes
serve
as
referee
.
As:O
chairman:O
,:O
he:O
oversees:O
all:O
the:O
matches:O
and:O
tournaments:O
that:O
take:O
place:O
within:O
the:O
series:O
and:O
will:O
sometimes:O
serve:O
as:O
referee:O
.:O