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_51140 ( "2004/ 05" text, "2007/ 08" text, "2010/ 11" text, "2011/ 12" text, "2012/ 13" text )

### Question ###
What is the 2011/ 12 when the 2010/ 11 is not held, and the 2012/ 13 is A?

### Accurate SQL ###

SELECT "2011/ 12" FROM table_51140 WHERE "2010/ 11" = 'not held' AND "2012/ 13" = 'a'