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 ":".
On
June
21
,
1941
,
Commonwealth
Act
No
.
On:O
June:O
21:O
,:O
1941:O
,:O
Commonwealth:O
Act:O
No:O
.:O