With no explanation, label each line with "O", "product-weapon", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Eventually
the
enchantments
are
broken
by
Rinaldo
,
and
the
siege
engines
built
(
Canto
18
)
.
Eventually:O
the:O
enchantments:O
are:O
broken:O
by:O
Rinaldo:person-other
,:O
and:O
the:O
siege:product-weapon
engines:product-weapon
built:O
(:O
Canto:O
18:O
):O
.:O