==== Vocabulary ====
**Concepts:** 
  * //hour// - hour (0-24) used to determine the time of day
  * //greeting// - the greeting string
  * //gender// - gender of the customer
  * //marital_status// - customer's marital status
  * //age// - customer's age
  * //salutation// - the salutation string

**Relations:**
  * //hour// -> //greeting//
  * //gender// -> //salutation//
  * //marital_status// -> //salutation//
  * //age// -> //salutation//