Wal-Mart Stores has asked a US federal appeals court to review a judge's order approving class-action status for a sex-discrimination lawsuit.
Wal-Mart has lost many sex discrimination lawsuits.
( z1 lose :ARG0 ( z2 company :name ( z3 name :op "Wal-Mart" ) ) :ARG1 ( z4 sue :ARG2 ( z5 discriminate :ARG1 ( z6 sex ) ) :quant ( z7 many ) ) )