With no explanation, label each line with "O", "person-director", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
On
February
16
,
2010
director
Doug
Liman
and
Fletcher
announced
that
they
would
be
collaborating
on
a
film
re-creation
of
the
1971
Attica
state
prison
rebellion
.
On:O
February:O
16:O
,:O
2010:O
director:O
Doug:person-director
Liman:person-director
and:O
Fletcher:person-director
announced:O
that:O
they:O
would:O
be:O
collaborating:O
on:O
a:O
film:O
re-creation:O
of:O
the:O
1971:O
Attica:O
state:O
prison:O
rebellion:O
.:O