With no explanation, label each line with "O", "product-software", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Electric
Fence
(
or
eFence
)
is
a
memory
debugger
written
by
Bruce
Perens
.
Electric:product-software
Fence:product-software
(:O
or:O
eFence:product-software
):O
is:O
a:O
memory:O
debugger:O
written:O
by:O
Bruce:person-other
Perens:person-other
.:O