मुझे नहीं पता था कि

I didn't know that

→ मैं
phrase Rare #11,559
I didn't know that Introduces something the speaker was unaware of; the following clause can also express an indirect question.
HI: मुझे नहीं पता था कि तुम यहाँ रहते हो।
EN: I didn't know that you live here.