counting nodes based on text within

Hi there, can you help me?
I have a piece of xml like this. I want to convert it to al list (table) of
date, email adresses and choice. That I can do, that's easy.
Now I want to start of the page with a summary like:

number of people choose "item a" is 2
number of people choose "item b" is 1

The number of choices is limited to 5. I'm willing to duplicate a piece of
code 5 times :-) But a generic solution will surely be nicer...

Thanks!

<thexml>
  <line date="10-22-2001,11:32:01">
        <Email>h.j.p.nouwens@xxxxxxxxxxxxxxx</Email>
        <choice>item a</choice>
  </line>
  <line date="10-22-2001,11:33:04">
        <Email>h.j.p.nouwens@xxxxxxxxxxxxxxx</Email>
        <choice>item b</choice>
  </line>
  <line date="10-22-2001,11:36:26">
        <Email>J.Jansen@xxxxxxxxxxxxxxx</Email>
        <choice>item a</choice>
  </line>
</thexml>

Hans Nouwens

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