With no explanation, label each line with "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Nader
,
furious
,
reacted
by
ordering
his
soldiers
to
sack
the
city
.
Nader:person-politician
,:O
furious:O
,:O
reacted:O
by:O
ordering:O
his:O
soldiers:O
to:O
sack:O
the:O
city:O
.:O