With no explanation, label each line with "product-other", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
For
1948
,
the
B
series
(
B=bus
)
was
introduced
as
a
variant
of
the
all-new
Ford
F-series
truck
line
,
designed
as
a
cowled
chassis
variant
of
the
F-5
and
F-6
(
1
½
and
2-ton
)
medium-duty
conventional
.
For:O
1948:O
,:O
the:O
B:product-other
series:product-other
(:product-other
B=bus:product-other
):product-other
was:O
introduced:O
as:O
a:O
variant:O
of:O
the:O
all-new:O
Ford:organization-company
F-series:O
truck:O
line:O
,:O
designed:O
as:O
a:O
cowled:O
chassis:O
variant:O
of:O
the:O
F-5:O
and:O
F-6:O
(:O
1:O
½:O
and:O
2-ton:O
):O
medium-duty:O
conventional:O
.:O