  A failure of property composition occurs also in the state  |ψ11&gt;, where the L- and the R-particle have definite z-spin properties both as ‘separated’ systems and as subsystems of the particle pair (though in contrast with  |ψ10&gt;, in |ψ11&gt; the range of the possible properties of the particles as separated systems and as subsystems of the pair is the same). For nothing in the above property assignment implies that in |ψ11&gt; the spin properties that the L-particle has as a ‘separated’ system and the spin properties that it has as a subsystem of the particle pair be the same: The L-particle may have z-spin ‘up’ as a separated system and z-spin ‘down’ as a subsystem of the particle pair.