In

> 昔あるところにおじいさんとおばあさんが住んでいました

Why isn't ある in the past tense (since we're talking a place that existed in
the past)? Would the sentence still be grammatical if it was?
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2023-08-31T03:52:33.537
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2023-08-31T04:23:28.237
2023-08-31T04:23:28.237
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question
grammar words
Understanding あるところ when used in a past-tense sentence