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_16162581_1 ( simplified_characters VARCHAR, wade_giles VARCHAR )

### Question ###
Name the simplified charaacters being hsin-y an i-ma

### Accurate SQL ###

SELECT simplified_characters FROM table_16162581_1 WHERE wade_giles = "hsin-yüan … i-ma"