What is the ISBN of the book with a first edition in May 2011?
CREATE TABLE table_name_42 (isbn VARCHAR, first_edition VARCHAR)
SELECT isbn FROM table_name_42 WHERE first_edition = "may 2011"
### Context: CREATE TABLE table_name_42 (isbn VARCHAR, first_edition VARCHAR) ### Question: What is the ISBN of the book with a first edition in May 2011? ### Answer: SELECT isbn FROM table_name_42 WHERE first_edition = "may 2011"