Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_26263954_1 (revised_hepburn VARCHAR, english VARCHAR)

### Question ###
how many revised hepburn when english is roman characters

### Accurate SQL ###

SELECT revised_hepburn FROM table_26263954_1 WHERE english = "Roman characters"