の関係

relationship; connection

→ の
phrase Common #3,981
relationship; connection の関係 means “the relationship of/between” something. In 何の関係もない, it means “have nothing to do with.”
JA: それは今私たちが話し合っている問題とは何の関係もない。
EN: That has nothing to do with the issue we are discussing now.

さらに、夫婦の関係にも変化が起こっている。

Moreover, the relationship between married couples is also changing.

読書と精神の関係は、運動が肉体の関係と同じだ。

Reading is to the mind what exercise is to the body.

海と魚の関係は空と鳥の関係と同じだ。

The relationship between the sea and fish is the same as that between the sky and birds.

“テロリストと人質の関係”という本の著者です

They’re the author of a book called The Relationship Between Terrorists and Hostages.

— ダイ・ハード (1988)

子どもと遊び場の関係は葉と森林の関係と同じである。

The relationship between children and playgrounds is the same as that between leaves and a forest.

漫画と日本の映画産業の関係は、ベストセラーとハリウッドの関係に似ている。

The relationship between manga and the Japanese film industry is similar to that between bestsellers and Hollywood.

えっ私と圭ちゃんの関係?

Huh? You mean the relationship between Kei-chan and me?

— 天気の子 (2019)