问题描述：
下面句子的who引导是定语从句吗?
In the city,the water pipes in some buildings cracked and burst.but the one million people of the city,who thought little of these events,were asleep as usual that night
In the city,the water pipes in some buildings cracked and burst.but the one million people of the city,who thought little of these events,were asleep as usual that night
问题解答：
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