Answer:
When the son of the water returns to the parent, it dies. What is it?
I hide but my head is outside.
I have four wings but cannot fly. I never laugh and never cry. On the same spot always found, toiling away with little sound.
I am black when I am clean and white when I am dirty?
Two bodies have I, though both joined in one. The more still I stand, the quicker I run.
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