Ex 298 Q 6 English to Latin quisquam versus aliquis

Salve,

The question asks to translate: “Did you see some one in the country? I did not see any one.”

The answer key translates this as : “Vidistine ruri quemquam? Quemquam non vidi”

Should not the first quemquam refering to the “some one” be translated using the indefinite pronoun aliquis instead of the indefinite pronoun quisquam?

Thankyou.

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