With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
At
Halloween
,
Michael
and
Elliott
dress
E.T
.
At:O
Halloween:O
,:O
Michael:person-other
and:O
Elliott:person-other
dress:O
E.T:O
.:O