  A class of Poisson algebras considered as a Poisson version of the
multiparameter quantized coordinate rings of symplectic and Euclidean
$2n$-spaces is constructed and the prime Poisson ideals and the symplectic
ideals of these Poisson algebras are described. As a result, it is shown that
the multiparameter quantized symplectic and Euclidean $2n$-spaces are
topological quotients of their classical spaces.
