CREATE TABLE table_24333 ("Season" FLOAT, "Episode" FLOAT, "Episode Summary" CLOB, "Premier date" CLOB, "External Link" CLOB, "Coach" CLOB)

Name the coach for may 20, 2010
SELECT "Coach" FROM table_24333 WHERE "Premier date" = 'May 20, 2010'
SELECT "Coach" FROM "table_24333" WHERE "Premier date" = 'May 20, 2010'