  Calculations of the polarization of $\Lambda$ and $\bar{\Lambda}$ particles
after fragmentation of a polarized quark produced in processes like $Z$-decay
and deep inelastic polarized lepton scattering must include $\Lambda$ and
$\bar{\Lambda}$ produced as decay products of $\Sigma^0$ and $\Sigma^*$ as well
as those produced directly. These decay contributions are significant and not
feasibly included in theoretical calculations based on QCD without additional
input from other experimental data. Furthermore these contributions depend on
the spin structure of the $\Sigma^0$ or $\Sigma^*$ and are not directly related
to the structure function of the $\Lambda$
