query: SELECT publisher FROM book_club WHERE YEAR  =  1989 INTERSECT SELECT publisher FROM book_club WHERE YEAR  =  1990
question: Show publishers the book published 1989 and the book 1990.
query_toks: SELECT publisher FROM book_club WHERE YEAR = 1989 INTERSECT SELECT publisher FROM book_club WHERE YEAR = 1990
query_toks_no_value: select publisher from book_club where year = value intersect select publisher from book_club where year = value
question_toks: Show publishers the book published 1989 and the book 1990.