Learn Finnish: Vuosikokous julisti pojan yksimielisesti voittajaksi. - The annual meeting declared the boy the winner unanimously.

The verb julistaa (to declare) works just like the verbs of electing and naming in this lesson. It takes the object being declared (pojan) and puts the title or role they receive into the translative case (voittajaksi). The translative case often expresses a change of state or a newly assigned role.

Why is the object pojan in the genitive-like accusative rather than the partitive?

The action of declaring the winner is a completed action that affects the specific boy as a whole, making it a total object. Because the sentence has a regular nominative subject (vuosikokous), this total object takes the genitive ending -n.

How is the adverb yksimielisesti formed?

It comes from the compound adjective yksimielinen (unanimous), which literally translates to one-minded (yksi + mieli + -nen). To form the adverb, the -nen ending changes to its stem -se- and takes the standard adverb suffix -sti.

What other verbs trigger this exact same sentence structure?

This [object + translative] pattern is standard for verbs of naming, electing, or transforming. Besides julistaa, you will regularly use it with verbs like valita (to choose or elect), nimittää (to appoint), and kutsua (to call someone something).