With no explanation, label each line with "location-GPE", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
By
the
time
of
the
An
Lushan
Rebellion
(
755-763
)
,
the
Tanguts
were
the
predominant
local
power
in
what
is
now
eastern
Gansu
,
Ningxia
,
and
northern
Shaanxi
.
By:O
the:O
time:O
of:O
the:O
An:event-attack/battle/war/militaryconflict
Lushan:event-attack/battle/war/militaryconflict
Rebellion:event-attack/battle/war/militaryconflict
(:O
755-763:O
):O
,:O
the:O
Tanguts:O
were:O
the:O
predominant:O
local:O
power:O
in:O
what:O
is:O
now:O
eastern:O
Gansu:location-GPE
,:O
Ningxia:location-GPE
,:O
and:O
northern:O
Shaanxi:location-GPE
.:O