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 ":".
The
two
differ
in
several
ways
:
The:O
two:O
differ:O
in:O
several:O
ways:O
::O