query: SELECT open_date ,  count(*) FROM church GROUP BY open_date
question: Of churches that opened in that year Show all opening years and number.
query_toks: SELECT open_date , count ( * ) FROM church GROUP BY open_date
query_toks_no_value: select open_date , count ( * ) from church group by open_date
question_toks: Of churches that opened in that year Show all opening years and number.