question about list and range of property

Hi,
  If in my RDF Schema,  the range of property knows is Person, i.e.,
<knows, rdfs:range Person>
then if some one knows many persons, can I write this in RDF?
<Person rdf:ID="P1">
<knows parseType="collection"> 
       <Person rdf:resource="#P2">
       <Person rdf:resource="#P3">
    </knows>
</Person>
 
is this RDF file validated against the RDF Schema?
 
1)       If true: by the semantics of rdfs:range , an instance of
rdf:List  would be  a Person, seems error; 
2)       If false:  then I must define the range of property "knows" is
rdf:List, but I can't constrict the list 
that only contains instances of  Person, and this definition would be
contrary to the intuition 
and make RDF data aggregation difficult. 
 
What is your idea? Thanks!
 
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Shengping Liu
Department of Information Science, Peking University, China.
 
Phone: 86-10-62757175
Mail:  lsp@is.pku.edu.cn