With no explanation, label each line with "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Xiahou
Ying
was
driving
the
carriage
and
he
stopped
Liu
Bang
each
time
.
Xiahou:person-politician
Ying:person-politician
was:O
driving:O
the:O
carriage:O
and:O
he:O
stopped:O
Liu:person-politician
Bang:person-politician
each:O
time:O
.:O