With no explanation, label each line with "O", "person-artist/author", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Della
Robbia
is
noted
for
his
colorful
,
tin-glazed
terracotta
statuary
,
a
technique
which
he
invented
and
passed
on
to
his
nephew
Andrea
della
Robbia
and
great-nephews
Giovanni
della
Robbia
and
Girolamo
della
Robbia
.
Della:O
Robbia:O
is:O
noted:O
for:O
his:O
colorful:O
,:O
tin-glazed:O
terracotta:O
statuary:O
,:O
a:O
technique:O
which:O
he:O
invented:O
and:O
passed:O
on:O
to:O
his:O
nephew:O
Andrea:person-artist/author
della:person-artist/author
Robbia:person-artist/author
and:O
great-nephews:O
Giovanni:person-artist/author
della:person-artist/author
Robbia:person-artist/author
and:O
Girolamo:person-artist/author
della:person-artist/author
Robbia:person-artist/author
.:O