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 ":".
However
,
the
influx
of
high
schoolers
caused
considerable
controversy
.
However:O
,:O
the:O
influx:O
of:O
high:O
schoolers:O
caused:O
considerable:O
controversy:O
.:O