With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Over
the
next
century
,
they
were
officially
recognized
by
the
imperial
government
.
Over:O
the:O
next:O
century:O
,:O
they:O
were:O
officially:O
recognized:O
by:O
the:O
imperial:O
government:O
.:O