query: SELECT avg(high_temperature) ,  day_of_week FROM weekly_weather GROUP BY day_of_week
question: What the average high temperature each day week?
query_toks: SELECT avg ( high_temperature ) , day_of_week FROM weekly_weather GROUP BY day_of_week
query_toks_no_value: select avg ( high_temperature ) , day_of_week from weekly_weather group by day_of_week
question_toks: What the average high temperature each day week?