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 ":".
company
(
1955–1957
)
,
which
had
been
formed
by
his
brother
Riccardo
Bellentani
.
company:O
(:O
1955–1957:O
):O
,:O
which:O
had:O
been:O
formed:O
by:O
his:O
brother:O
Riccardo:person-other
Bellentani:person-other
.:O