Question: What is Score, when Group Song is 就是你, and when Index is F2?
SQL: SELECT "Score" FROM "2-15905451-4" WHERE "Group Song" = '就是你' AND "Index" = 'F2';

Question: What is Score, when Name is Nicole 赖淞凤?
SQL: SELECT "Score" FROM "2-15905451-4" WHERE "Name" = 'Nicole 赖淞凤';

Question: What is Score, when Song is 第九夜?
SQL: SELECT "Score" FROM "2-15905451-4" WHERE "Song" = '第九夜';

Question: What is Group Song, when Song is 换季?
SQL: SELECT "Group Song" FROM "2-15905451-4" WHERE "Song" = '换季';

Question: What is Group Song, when Name is Alice 林芯糸?
SQL: SELECT "Group Song" FROM "2-15905451-4" WHERE "Name" = 'Alice 林芯糸';