Question: What is the women's singles before 1965 with Kaj Lindfors Ann-Louise von Essen being mixed doubles?
SQL: SELECT "Women's singles" FROM "2-13857700-1" WHERE "Year" < 1965.0 AND "Mixed doubles" = 'Kaj Lindfors Ann-Louise von Essen';

Question: When did Mika Heinonen Susanna Dahlberg win mixed doubles?
SQL: SELECT AVG("Year") FROM "2-13857700-1" WHERE "Mixed doubles" = 'Mika Heinonen Susanna Dahlberg';

Question: How many years did pia pajunen nina sundberg win women's doubles?
SQL: SELECT COUNT("Year") FROM "2-13857700-1" WHERE "Women's doubles" = 'pia pajunen nina sundberg';

Question: Who won women's singles in 1961?
SQL: SELECT "Women's singles" FROM "2-13857700-1" WHERE "Year" = 1961.0;