Ich związek jest spokojny.

Their relationship is calm.

Breakdown of Ich związek jest spokojny.

• być: to be
• spokojny: calm
• ich: their
• związek: the relationship

Questions & Answers about Ich związek jest spokojny.

Why is it Ich związek and not Oni związek?

Oni means they (subject pronoun), so it cannot directly modify a noun.
To say their relationship, you need the possessive form:

• oni – they (subject)
• ich – their (possessive)

So:

• Oni mają związek. – They have a relationship.
• Ich związek jest spokojny. – Their relationship is calm.

Using oni związek would be ungrammatical in Polish.

Why is Ich capitalized? Is it the same as German Ich (“I”)?

Here Ich is capitalized only because it is at the beginning of the sentence.
The word is Polish ich (meaning their), not German Ich.

In the middle of a sentence you would write:

• Lubię ich związek. – I like their relationship.

So:

• Polish ich = their (or genitive them)
• German Ich = I

They just happen to look the same when capitalized at the start of a sentence.

What case is związek in here, and why?