query: SELECT avg(capacity) FROM stadium WHERE opening_year  =  2005
question: What-all of the stadiums that were opened in year 2005 is that capacity average?
query_toks: SELECT avg ( capacity ) FROM stadium WHERE opening_year = 2005
query_toks_no_value: select avg ( capacity ) from stadium where opening_year = value
question_toks: What-all of the stadiums that were opened in year 2005 is that capacity average?