This is the 8473rd most frequent Japanese word.
所在
"所在" means "whereabouts" or "location."
Here, 所在 refers to someone's location or whereabouts, indicating where a person might be.
彼の所在はまだわかっていません。
His whereabouts are still unknown.
Here, 所在 is used to refer to the physical location or address of the company, indicating where it is situated.
会社の所在を確認する必要があります。
We need to confirm the location of the company.
In this context, 所在 refers to the 'means' or whereabouts of a solution, metaphorically signifying the existence of an answer.