With no explanation, label each line with "product-other", "O", "product-software", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
It
is
implemented
by
central
processing
units
(
CPUs
)
and
microprocessors
used
in
PDP-11
minicomputers
.
It:O
is:O
implemented:O
by:O
central:O
processing:O
units:O
(:O
CPUs:product-software
):O
and:O
microprocessors:O
used:O
in:O
PDP-11:product-other
minicomputers:O
.:O