どこかにある

be somewhere

→ どこか
phrase Rare #33,775
be somewhere Used to say that something exists or is located somewhere, without specifying exactly where.
JA: 鍵は家のどこかにあるよ。
EN: The keys are somewhere in the house.

加速器は必ずどこかにあるんだ

There has to be an accelerator somewhere.

— 不思議惑星キン・ザ・ザ (1986)

それは近所のどこかにあると僕は思うよ。

I think it’s somewhere in the neighborhood.

どこかにあるはずだ

It must be somewhere.

— バジュランギおじさんと、小さな迷子 (2015)

きっとどこかにあるわよ

I'm sure it's around here somewhere.

— When Marnie Was There (2014)