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 ":".
The
fourth
Sena
king
,
Lakshmana
Sena
,
son
of
Ballala
Sena
,
was
the
greatest
king
of
his
line
.
The:O
fourth:O
Sena:O
king:O
,:O
Lakshmana:person-politician
Sena:person-politician
,:O
son:O
of:O
Ballala:person-politician
Sena:person-politician
,:O
was:O
the:O
greatest:O
king:O
of:O
his:O
line:O
.:O