<human>: Is "A dense wave of smog began in the Central and Eastern part of China on 2 December 2013 across a distance of around 1,200 kilometres (750 mi), including Tianjin, Hebei, Shandong, Jiangsu, Anhui, Shanghai and Zhejiang." a good answer to the question "When did a thick wave of smog first appear in Central and Eastern China?"
OPTIONS:
- yes
- no
<bot>: yes