With no explanation, label each line with "product-other", "product-car", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
An
upgrade
to
the
Flip
Chip
led
to
the
R
series
,
which
in
turn
led
to
the
PDP-7A
in
1965
.
An:O
upgrade:O
to:O
the:O
Flip:product-other
Chip:product-other
led:O
to:O
the:O
R:O
series:O
,:O
which:O
in:O
turn:O
led:O
to:O
the:O
PDP-7A:product-car
in:O
1965:O
.:O