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 ":".
244/5
&
lt
;
/ref
&
gt
;
244/5:O
&:O
lt:O
;:O
/ref:O
&:O
gt:O
;:O