Learn Finnish: Puuseppä korjaa tehtaassa valmistettua pöytää. - The carpenter is fixing a table manufactured in a factory.

In Finnish, when you use a participle like valmistettua (manufactured) as an adjective to describe a noun, any words linked to that action must come strictly before the participle. So instead of saying 'a table manufactured in a factory', Finnish structures it as 'an in-a-factory manufactured table' (tehtaassa valmistettua pöytää).

Why are both valmistettua and pöytää in the partitive case?

The verb korjata (to fix) takes a partitive object here because the action is ongoing. Since valmistettua acts as an adjective describing pöytää, it must agree with the noun's case. The base form is valmistettu, and its partitive form is valmistettua.

If the table is in the partitive case, why doesn't tehtaassa change to match it?

tehtaassa (in the factory) tells us where the manufacturing happened, so it modifies the participle valmistettua, not the noun pöytää. Adverbials describing where or how an action happened keep their own required case (here, the inessive case for 'in') and do not copy the case of the main noun.

What type of word is valmistettua?

It is the passive past participle (often called the TU-participle) of the verb valmistaa (to manufacture). It is used to show that an action was done to the noun by an unspecified entity, much like the English '-ed' in 'a manufactured table'.