query: SELECT YEAR FROM festival_detail WHERE LOCATION  =  'United States' INTERSECT SELECT YEAR FROM festival_detail WHERE LOCATION != 'United States'
question: Which year got festival both 'United States' and outside 'United States'?
query_toks: SELECT YEAR FROM festival_detail WHERE LOCATION = 'United States ' INTERSECT SELECT YEAR FROM festival_detail WHERE LOCATION ! = 'United States '
query_toks_no_value: select year from festival_detail where location = value intersect select year from festival_detail where location ! = value
question_toks: Which year got festival both 'United States' and outside 'United States'?