title: Shallow parsing with ANTLR
body: <p>I'm trying to develop a solution able to extract, in a closed-context, certain actions.</p>
  
  <p>For example, in a context of booking cinema tickets, if a user says:</p>
  
  <p>"I'd like to go to the cinema tomorrow night, it would be Casablanca, I'd like to be at the last row, please"</p>
  
  <p>I've designed grammars for getting the name of the film, desired seat, date and hour of the projection, etc.</p>
  
  <p>However, though I've thought about ANTLR for developing such solution, I don't really know if it has such functionality, I mean, if I can define several root symbols.</p>