Japan's Toshiba Corp. announced Tuesday that it has developed the first laptop computer with its new HD DVD drive: a next-generation disc format it is promoting over a rival standard pushed by Sony Corp.
Sony and Toshiba are in the same business sector
The text states they are rivals and have competing products, ergo in same business sector. Computer may not know synonym for sector.
( z1 same :ARG1 ( z2 company :name ( z3 name :op "Sony" ) ) :ARG2 ( z4 company :name ( z5 name :op "Toshiba" ) ) :location ( z6 sector :mod ( z7 business ) ) )