Transitions between parallel tags.

Hello,

I am wondering how the following code would work:
<parallel>
<state id=x>
  <state id=e/>
</state>
<state id=y>
  <transition id=t target="e y"/>
</state>
</parallel>

+--------+-----------+
|  +--+   |   +--+     |
|  | x |    |   | y | \    |
|  +--+   |   +--+ |   |
|            |     |    |   |
| +--+    |    t|     |  |
| | e |<-------/\---|  |
| +--+    |              |
+--------+----------+

Is that possible? And if, how would it look internally? We have two
parallel instances, after transition t, do we have three?

Thank you