[Attempto] Relative sentence example in 6.6 DRS Report causes error

[Joshua TAYLOR]

The example "There is a card X. X which a customer possesses is
valid."  in the 6.6 DRS Report does not parse with the webservice, but
produces the error:

CL-USER 57 > (ape-webservice:invoke-ape-webservice
 :text "There is a card X. X which a customer possesses is valid."
 :cdrsxml t)
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>

<apeResult>
  <duration tokenizer=\"0.000\" parser=\"0.010\" refres=\"0.000\"/>
  <drsxml>&lt;?xml version=\"1.0\" encoding=\"UTF-8\"?&gt;

&lt;DRS domain=\"\"/&gt;</drsxml>
  <messages>
    <message
	importance=\"error\"
	type=\"sentence\"
	sentence=\"2\"
	token=\"2\"
	value=\"X &lt;&gt; which a customer possesses is valid.\"
	repair=\"This is the first sentence that was not ACE. The sign
&lt;&gt; indicates the position where parsing failed.\"/>
  </messages>
</apeResult>

"

Is there a variation on this formation which will parse correctly?

-- 
Joshua Taylor, http://www.cs.rpi.edu/~tayloj/