query: SELECT city FROM city WHERE regional_population  >  10000000 UNION SELECT city FROM city WHERE regional_population  <  5000000
question: Please give me list city whose regional population 8000000 or under 5000000.
query_toks: SELECT city FROM city WHERE regional_population > 10000000 UNION SELECT city FROM city WHERE regional_population < 5000000
query_toks_no_value: select city from city where regional_population > value union select city from city where regional_population < value
question_toks: Please give me list city whose regional population 8000000 or under 5000000.