<prompt> Translate the following text to EnglishKwa mfano, kiwango cha wastani cha WTP kuepuka bronchitis ya muda mrefu ni 331,000 kwa kila kesi ya CB inayohusiana na uchafuzi.  <response>: Value is the mean of a generated distribution of WTP to avoid a Chronic Bronchitis Base 331,000 per case of pollution-related CB. 