This is the 3492nd most frequent Turkish word.
olabileceğine
"That it can be" or "that it could be."
In this sentence, 'olabileceğine' is composed of 'ol' (to be), the potential suffix '-ebil', and the evidential suffix '-eceğine', used here to express a belief or possibility regarding the action.
Onun toplantıya geç kalabileceğine inanamadık.
We couldn't believe that she could be late for the meeting.
Here, 'olabileceğine' indicates the potentiality and belief about someone's success in a challenging matter.
Bu kadar zor bir konuda başarılı olabileceğine hepimiz şüpheyle baktık.
We all doubted that he could succeed in such a challenging matter.
In this example, 'olabileceğine' expresses a hypothetical or potential assumption about weather conditions.