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 ":".
During
its
pre
1930s
heyday
S.T.D
.
During:O
its:O
pre:O
1930s:O
heyday:O
S.T.D:O
.:O