Question: Name the date for Zi Yan Jie Zheng opponent
SQL: SELECT "Date" FROM "2-12537744-4" WHERE "Opponents" = 'Zi Yan Jie Zheng';

Question: Name the partner for 14 October 2007
SQL: SELECT "Partner" FROM "2-12537744-4" WHERE "Date" = '14 October 2007';

Question: Name the partner for opponents of Alexandra Dulgheru Magdaléna Rybáriková
SQL: SELECT "Partner" FROM "2-12537744-4" WHERE "Opponents" = 'Alexandra Dulgheru Magdaléna Rybáriková';

Question: Name the opponents for 24 July 2011
SQL: SELECT "Opponents" FROM "2-12537744-4" WHERE "Date" = '24 July 2011';