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 ":".
The
dukes
often
conducted
feuds
against
each
other
–
feuds
that
,
more
often
than
not
,
escalated
into
local
wars
.
The:O
dukes:O
often:O
conducted:O
feuds:O
against:O
each:O
other:O
–:O
feuds:O
that:O
,:O
more:O
often:O
than:O
not:O
,:O
escalated:O
into:O
local:O
wars:O
.:O