This is the 5012th most frequent Turkish word.
gruplarının
"Of the groups" or "groups'" (possessive form in Turkish).
In this sentence, 'gruplarının' (groups') is used in the possessive form to denote that the performance belongs to the bands.
Müzik gruplarının performansı gerçekten harikaydı.
The bands' performance was truly wonderful.
Here, 'gruplarının' indicates possession, showing that the training program belongs to the sports groups.
Spor gruplarının antrenman programına dahil olmak istiyorum.
I want to be included in the training program of the sports groups.
In this example, 'gruplarının' signifies that the needs are associated with the educational groups.