With no explanation, label each line with "O", "person-director", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Mascagni
himself
conducted
the
performance
.
Mascagni:person-director
himself:O
conducted:O
the:O
performance:O
.:O