title: Alexa Python Skill getting spoken value not slot id
body: <p>My slot type has race track names in like Silverstone and Suzuka<br>
  They also have synonyms like Bristish and Japanese.</p>
  <p>When I say British race I want the Python to return the value or id not the spoken words.</p>
  <p>Currently I've got: <code>track = intent['slots']['trackSlot']['value']</code> which would return British, not the required Silverstone</p>