title: UIMA RUTA - How to combine annotations?
body: <p>I built some custom annotations on sample phrases in order to recognize keywords. The problem that I have right now is that I can't combine these annotations to build upper-level patterns of annotations. </p>
  
  <p>eg. the phrases are:
  1."I want to buy eggs."
  2."I want to have breakfast with bread."
  3."I want to have eggs for breakfast."</p>
  
  <pre><code>DECLARE Annotation Eggs;
  Entity{FEATURE("text","eggs")-&gt;MARK(Eggs)};
  
  DECLARE Annotation Breakfast;
  Entity{FEATURE("text","breakfast")-&gt;MARK(Breakfast)};
  </code></pre>
  
  <p>How could I build a new annotation, which combines/merge the two annotations already built and recognize the third phrase?
  I have tried the type below already but it's not working:</p>
  
  <pre><code>DECLARE Annotation EggsForBreakfast;
  Entity{AND(CONTAINS(Eggs),CONTAINS(Breakfast))-&gt;MARK(EggsForBreakfast)};
  </code></pre>