CREATE TABLE table_58123 ("Title" CLOB, "Pages" CLOB, "First edition" CLOB, "Second edition" CLOB, "ISBN" CLOB)

What is the ISBN of the book with a first edition in May 2011?
SELECT "ISBN" FROM table_58123 WHERE "First edition" = 'may 2011'
SELECT "ISBN" FROM "table_58123" WHERE "First edition" = 'may 2011'