Where it falls apart is west of the Ontario border because instead of each of the western provinces being given a number of senators equal or in comparison to the other provinces that were already in, the four western provinces got only twenty-four senators, in other words, six for Alberta, six for B.C., six for Manitoba and six for Saskatchewan.
The western provinces are equally represented
( z1 represent :ARG1 ( z2 province :location ( z3 west ) ) :ARG1-of ( z4 equal ) )