With no explanation, label each line with "O", "product-train", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Both
classes
are
now
sometimes
referred
to
as
``
Networker
Turbos
``
,
a
name
which
was
derived
some
three
years
later
for
the
project
that
resulted
in
the
visually
similar
and
EMUs
.
Both:O
classes:O
are:O
now:O
sometimes:O
referred:O
to:O
as:O
``:O
Networker:product-train
Turbos:product-train
``:O
,:O
a:O
name:O
which:O
was:O
derived:O
some:O
three:O
years:O
later:O
for:O
the:O
project:O
that:O
resulted:O
in:O
the:O
visually:O
similar:O
and:O
EMUs:O
.:O