I want to know the answer to the following question:
By when does the plan call for improvement of rural Tibetan income?
All the background I'm provided with is that "From January 18–20, 2010 a national conference on Tibet and areas inhabited by Tibetans in Sichuan, Yunnan, Gansu and Qinghai was held in China and a substantial plan to improve development of the areas was announced.". Is that enough to answer the question?
Answer: no