With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Indra
and
other
Devas
gathered
to
fight
a
war
.
Indra:person-other
and:O
other:O
Devas:person-other
gathered:O
to:O
fight:O
a:O
war:O
.:O