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 ":".
Entrepreneurs
emerged
to
meet
the
demand
.
Entrepreneurs:O
emerged:O
to:O
meet:O
the:O
demand:O
.:O