This is the 4692nd most frequent Korean word.
것인가에
"것인가에" is an interrogative expression roughly meaning "whether it is" or "if it is" when posed as a question, depending on context.
In this sentence, '것인가에' refers to the question or uncertainty about 'whether this will happen'.
이 일이 성공할 것인가에 대한 의문이 있다.
There is a question about whether this endeavor will succeed.
Here, '것인가에' indicates the topic of speculation, referring to the event 'whether our team will win'.
우리 팀이 우승할 것인가에 대해 많은 추측이 있습니다.
There is much speculation about whether our team will win.
'것인가에' in this context sets the condition, pointing to the event 'whether he will come'.