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 ":".
Due
to
an
unexpected
turn
of
events
,
his
cattle
fell
prey
to
an
unknown
disease
resulting
in
their
death
.
Due:O
to:O
an:O
unexpected:O
turn:O
of:O
events:O
,:O
his:O
cattle:O
fell:O
prey:O
to:O
an:O
unknown:O
disease:O
resulting:O
in:O
their:O
death:O
.:O