Question: What is Choreographer(s), when Chosen By is Mary Murphy, and when Couple is Katee Shean Stephen "Twitch" Boss?
SQL: SELECT "Choreographer(s)" FROM "2-15918328-28" WHERE "Chosen by" = 'Mary Murphy' AND "Couple" = 'Katee Shean Stephen "Twitch" Boss';

Question: What is Choreographer(s), when Chosen is Mary Murphy, and when Style is Contemporary?
SQL: SELECT "Choreographer(s)" FROM "2-15918328-28" WHERE "Chosen by" = 'Mary Murphy' AND "Style" = 'Contemporary';

Question: What is Chosen By, when Couple is Katee Shean Joshua Allen, and when Choreographer(s) is Nakul Dev Mahajan?
SQL: SELECT "Chosen by" FROM "2-15918328-28" WHERE "Couple" = 'Katee Shean Joshua Allen' AND "Choreographer(s)" = 'Nakul Dev Mahajan';

Question: What is Style, when Choreographer(s) is Dave Scott?
SQL: SELECT "Style" FROM "2-15918328-28" WHERE "Choreographer(s)" = 'Dave Scott';

Question: What is Couple, when Choreographer(s) is Nakul Dev Mahajan?
SQL: SELECT "Couple" FROM "2-15918328-28" WHERE "Choreographer(s)" = 'Nakul Dev Mahajan';