With no explanation, label each line with "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
This
was
part
of
a
series
of
events
known
as
the
Colorado
War
and
was
preceded
by
the
Hungate
massacre
.
This:O
was:O
part:O
of:O
a:O
series:O
of:O
events:O
known:O
as:O
the:O
Colorado:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
and:O
was:O
preceded:O
by:O
the:O
Hungate:O
massacre:O
.:O