Table: rom_int_badm
Columns: year
men_s_singles
women_s_singles
men_s_doubles
women_s_doubles
mixed_doubles

Question: Who won the Women's singles in 2013?
SQL: SELECT "women_s_singles" FROM rom_int_badm WHERE "year" = '2013'

Question: Who won the Men's doubles when there was no competition in the Men's singles?
SQL: SELECT "men_s_doubles" FROM rom_int_badm WHERE "men_s_singles" = 'no competition'

Question: What year was there no competition in Mixed Doubles?
SQL: SELECT "year" FROM rom_int_badm WHERE "mixed_doubles" = 'no competition'

Question: What year did Lonneke Janssen win the Women's singles?
SQL: SELECT "year" FROM rom_int_badm WHERE "women_s_singles" = 'lonneke janssen'