Table: finnish_national_badminton_champs
Columns: year
mens_singles
womens_singles
mens_doubles
womens_doubles
mixed_doubles

Question:  how many mens singles with mens doubles being pontus jantti lasse lindelöf
SQL: SELECT COUNT("mens_singles") FROM finnish_national_badminton_champs WHERE "mens_doubles" = 'Pontus Jantti Lasse Lindelöf'

Question: who is the the mens doubles with mixed doubles being jimm aalto nina sarnesto
SQL: SELECT "mens_doubles" FROM finnish_national_badminton_champs WHERE "mixed_doubles" = 'Jimm Aalto Nina Sarnesto'

Question: who is the the mixed doubles with year being 1972
SQL: SELECT "mixed_doubles" FROM finnish_national_badminton_champs WHERE "year" = 1972

Question: who is the the mens doubles with year being 1978
SQL: SELECT "mens_doubles" FROM finnish_national_badminton_champs WHERE "year" = 1978

Question: who is the the mens singles with mens doubles being kaj lindfors kaj osterberg
SQL: SELECT "mens_singles" FROM finnish_national_badminton_champs WHERE "mens_doubles" = 'Kaj Lindfors Kaj Osterberg'