Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| English | Japanese | Kana spelling | Revised Hepburn | Kunrei-shiki | Nihon-shiki |
| --- | --- | --- | --- | --- | --- |
| Roman characters | ローマ字 | ローマじ | rōmaji | rômazi | rômazi |
| Mount Fuji | 富士山 | ふじさん | Fujisan | Huzisan | Huzisan |
| tea | お茶 | おちゃ | ocha | otya | otya |
| governor | 知事 | ちじ | chiji | tizi | tizi |
| to shrink | 縮む | ちぢむ | chijimu | tizimu | tidimu |
Question:
how many revised hepburn when english is roman characters
Answer:
rōmaji