Nineteen of the European Union's 25 member states were voting in the biggest transnational elections ever held, and the first for the EU since the bloc's expansion into the former communist eastern Europe on May 1.
Eight of the European Union's 25 member states were not voting in the biggest transnational elections ever held.
If 19/25 were voting, then only 6 were not voting, not 8. It's difficult because the system probably doesn't understand what calculations to perform to get the correct value due to the semantics involved.
( z1 vote :polarity - :ARG0 ( z2 state :quant 8 :ARG1-of ( z3 include :ARG2 ( z4 state :quant 25 :ARG0-of ( z5 have-org-role :ARG1 ( z6 organization :name ( z7 name :op "European" :op "Union" ) ) :ARG2 ( z8 member ) ) ) ) ) )