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 ":".
It
was
conquered
by
Former
Yan
in
356
.
It:O
was:O
conquered:O
by:O
Former:O
Yan:person-other
in:O
356:O
.:O