It is…that…
It is…who…
…is the one that…
…is the one who…
Structure
- Phrase + のは 、Noun + 方だ 。
- Noun +
だな + のは 、Noun + 方だ- It is “noun” that / who does “phrase”
- The one that / who does “phrase” is “noun”
[Used to refer to one of two or more contrasted elements (sides)]
[The copula だ changes to な when modifying の, なのは also places more emphasis on the noun (It is he that is…)]