With no explanation, label each line with "O", "person-athlete", "organization-sportsteam", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
biggest
co-promotion
occurred
on
October
17
,
1999
when
Battlarts
and
The
Great
Sasuke
's
Michinoku
Pro
Wrestling
presented
``
Michinoku
Pro
vs
.
Battlarts
``
,
which
was
headlined
by
a
tag
match
pitting
the
owners
of
both
promotions
(
Great
Sasuke
and
Ishikawa
)
against
Jinsei
Shinzaki
and
Alexander
Otsuka
.
The:O
biggest:O
co-promotion:O
occurred:O
on:O
October:O
17:O
,:O
1999:O
when:O
Battlarts:event-sportsevent
and:O
The:event-sportsevent
Great:event-sportsevent
Sasuke:event-sportsevent
's:event-sportsevent
Michinoku:event-sportsevent
Pro:event-sportsevent
Wrestling:event-sportsevent
presented:O
``:O
Michinoku:organization-sportsteam
Pro:organization-sportsteam
vs:O
.:O
Battlarts:organization-sportsteam
``:O
,:O
which:O
was:O
headlined:O
by:O
a:O
tag:O
match:O
pitting:O
the:O
owners:O
of:O
both:O
promotions:O
(:O
Great:person-athlete
Sasuke:person-athlete
and:O
Ishikawa:person-athlete
):O
against:O
Jinsei:person-athlete
Shinzaki:person-athlete
and:O
Alexander:person-athlete
Otsuka:person-athlete
.:O