With no explanation, label each line with "person-soldier", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
They
returned
with
him
,
fighting
at
the
Battle
of
Stiklestad
in
1030
,
where
Olaf
was
killed
.
They:O
returned:O
with:O
him:O
,:O
fighting:O
at:O
the:O
Battle:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
Stiklestad:event-attack/battle/war/militaryconflict
in:O
1030:O
,:O
where:person-soldier
Olaf:person-soldier
was:O
killed:O
.:O