With no explanation, label each line with "location-GPE", "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Under
Liu
's
rule
,
Xiangyang
became
a
major
destination
of
the
northern
elite
fleeing
warfare
in
the
Central
Plain
.
Under:O
Liu:person-politician
's:O
rule:O
,:O
Xiangyang:location-GPE
became:O
a:O
major:O
destination:O
of:O
the:O
northern:O
elite:O
fleeing:O
warfare:O
in:O
the:O
Central:O
Plain:O
.:O