Hot answers tagged particle-ka
I never did figure out what the right answer was in traditional grammar, but I ended up reading in a linguistics paper somewhere that this is a complementizer. In other words, it turns a clause into a complement of the following verb. In your example, it turns どこにある into an interrogative complement of the verb 知っています: 1. デパートはどこにあるか？ As ...
Yes, you're interpreting the sentence correctly. My understanding is that this is possible because there is the "question word" of どこ in there, which makes the か（知らない） reading possible.
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