This is the 180th most frequent Slovenian word.
predsednika
The Slovenian word "predsednika" means "president" in English (genitive or accusative singular, or nominative dual form).
In this sentence, 'predsednika' is in the accusative case and is used to identify the direct object of the verb 'govorili'.
Govorili smo o predsedniku naše države.
We were talking about the president of our country.
Here, 'predsednika' functions as a direct object again, in the accusative case, specifying whom 'videli' refers to.
Videli smo predsednika na televiziji.
We saw the president on television.
In this example, 'predsednika' is used in the dative case, indicating the indirect object to whom the statement is directed.