градоначелника

In a sentence

• Господин Петровић је градоначелника Новог Сада.

  Mr. Petrović is the mayor of Novi Sad.

  Here, 'градоначелника' is used in the context of identifying the person who holds the mayoral position.

• Многи грађани су поздравили градоначелника након свечаности.

  Many citizens greeted the mayor after the ceremony.

  In this sentence, 'градоначелника' is used to indicate the recipient of the citizens' greetings in the accusative case.

• За време разговора, гости су постављали питања градоначелника.

  During the conversation, the guests were asking questions to the mayor.

  Here, 'градоначелника' is in the genitive case, showing possession or relation as the person to whom the questions were directed.