CREATE TABLE table_51143 ("2004/ 05" CLOB, "2007/ 08" CLOB, "2010/ 11" CLOB, "2011/ 12" CLOB, "2012/ 13" CLOB)

What is the 2010/ 11 when the 2011/ 12 is ranking tournaments?
SELECT "2010/ 11" FROM table_51143 WHERE "2011/ 12" = 'ranking tournaments'
SELECT "2010/ 11" FROM "table_51143" WHERE "2011/ 12" = 'ranking tournaments'