问题描述：
这个句子是定语从句么?
-前面：
eleven kilometres directly below the city one of the greatest earthquakes of the 20th century had begun.
====
这句话
it was felt in beijing,which is more than two hundred kilometres away.
如果是,which指代的是什么.
-前面：
eleven kilometres directly below the city one of the greatest earthquakes of the 20th century had begun.
====
这句话
it was felt in beijing,which is more than two hundred kilometres away.
如果是,which指代的是什么.
问题解答：
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