Table: tennis_results
Columns: season
mens_singles
womens_singles
mens_doubles
womens_doubles
mixed_doubles

Question: How many mens doubles took place in 1970/1971?
SQL: SELECT COUNT("mens_doubles") FROM tennis_results WHERE "season" = '1970/1971'

Question: Where were the Womens Doubles in the 1951/1952 season and who won?
SQL: SELECT "womens_doubles" FROM tennis_results WHERE "season" = '1951/1952'

Question: Who was the womens singles winnerwhen the mens doubles were  stefan karlsson claes nordin , bk aura gbk?
SQL: SELECT "womens_singles" FROM tennis_results WHERE "mens_doubles" = 'Stefan Karlsson Claes Nordin , BK Aura GBK'

Question: Who were the winners of mens doubles in the 1986/1987 season held?
SQL: SELECT "mens_doubles" FROM tennis_results WHERE "season" = '1986/1987'

Question: Who won the Mens Singles when the Mixed doubles went to Stellan Mohlin Kerstin Ståhl , Aik?
SQL: SELECT "mens_singles" FROM tennis_results WHERE "mixed_doubles" = 'Stellan Mohlin Kerstin Ståhl , AIK'

Question: Who won the womens singles in the 1958/1959 season?
SQL: SELECT "womens_singles" FROM tennis_results WHERE "season" = '1958/1959'