query: SELECT avg(capacity) FROM stadium WHERE opening_year  =  2005
question: What-all the average capacity of stadiums that have been opened them in year 2005?
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 the average capacity of stadiums that have been opened them in year 2005?