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 ":".
Warren
and
John
Marshall
.
''
Warren:O
and:O
John:O
Marshall:O
.:O
'':O