"Once there was a glorious knight, whose duty was to help the people of his kingdom. One day, the daughter of the king was kidnaped by an evil wizard, that lives in a far away castle in a far away land. So, the knight, ready to fulfill his duty, searches a place to buy some items for his quest, like a shop. But he doesn't know where is the nearest one. Fortunately, a general appeared near him, so the knight asks him indications". As the audio reports, the knight (so the patient) must ask to general (that is situated near him) where he can find a shop. Properly, the patient must say a phrase where the word "shop" is contained. Also, to reflect a speech that can take place in everyday situation, the patient should greets the general saying "hello". If this happens here the audio answer: "Hi sir. Do you need something?" By performing this, the patient is in the situation where must be said a phrase containing "shop". Here what happens if the patient did it: "It's behind me. Just go straight forward. And remember to knock before entering"