can xml schema represent such a instance xml document here?

Hi,

    I met a complicated xml instance document which has two different sets of 
namespace in it.  Now I want to create a xml schema for this xml instance 
document with several ways but those do not work perfectly. I am a beginner of 
xml. So I wish people here could give me a suggestion.  The following is the 
xml instance document:

<item  xmlns="http://www.acmeinc.com/jp#supplies"
       xmlns:toy="http://www.acmeinc.com/jp#toys">
  <name> backpack </name>
  <feature>
       <toy:item>
            <toy:name>cyberpet</toy:name>
       </toy:item>
  </feature>
  <item xmlns="http://www.acmeinc.com/jp#supplies2"
            xmlns:toy="http://www.acmeinc.com/jp#toys2">
        <name>notebook</name>
        <toy:name>sticker </toy:name>
   </item>
</item>
 
     I hope my problem is clear somewhat.

thanks,

elizabeth