Breakdown of Matkustajat uskovat näytön olevan rikki.
olla
to be
näyttö
screen (display, monitor)
uskoa
to believe
rikki
broken
Questions & Answers about Matkustajat uskovat näytön olevan rikki.
Why is näytön in the genitive case here?
This is how the referative construction (partisiippirakenne) works. When you compress an että (that) clause into this structure, the subject of the action (the screen) must be put into the genitive case (näytön).
How would you say this sentence using a normal että clause instead?
It would be Matkustajat uskovat, että näyttö on rikki. Notice that in the että version, näyttö is in the basic nominative case and the verb is just on.
Where does the form olevan come from?
It is formed from the verb olla (to be). You take the present active participle, which is the -va/-vä form (oleva), and add the -n ending required by this specific sentence structure.
Why isn't rikki in a different case to match the rest of the sentence?
The word rikki (broken) is an uninflected word. Unlike most adjectives in Finnish, it never takes any case endings, no matter what grammar is happening around it.