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 ":".
Reclaim
the
Night
protests
spread
to
Bolton
and
Brighton
and
a
national
march
was
held
in
London
on
20
January
1979
.
Reclaim:O
the:O
Night:O
protests:O
spread:O
to:O
Bolton:O
and:O
Brighton:O
and:O
a:O
national:O
march:O
was:O
held:O
in:O
London:O
on:O
20:O
January:O
1979:O
.:O