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 ":".
Mazzini
had
sent
him
as
a
guide
.
Mazzini:O
had:O
sent:O
him:O
as:O
a:O
guide:O
.:O