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 ":".
He
made
his
List-A
debut
2
years
later
.
He:O
made:O
his:O
List-A:O
debut:O
2:O
years:O
later:O
.:O