This is the 7926th most frequent Turkish word.
kongresini
"Kongresini" means "its congress" in English.
The word 'kongresini' refers to 'its congress', and serves as the object of the verb 'gerçekleştirecek' (will hold).
Dernek bu yıl kongresini büyük bir salonda gerçekleştirecek.
The association will hold its congress in a large hall this year.
Here, 'kongresini' again means 'its congress', showing possession (belonging to the club) and acts as the object in the context of time inquiry.
Öğrenciler kulübün kongresini ne zaman yapacağını merak ediyor.
The students are wondering when the club will hold its congress.
In this sentence, 'kongresini' indicates 'its congress', belonging to the government, and is affected by the action 'düzenlemek' (to organize).