Which 2007 Cascais has 2014 RS:X Santander.
CREATE TABLE table_15742 (
    "Discipline" text,
    "2003 Cadiz" text,
    "2007 Cascais" text,
    "2011 Perth" text,
    "2014 Santander" text
)
SELECT "2007 Cascais" FROM table_15742 WHERE "2014 Santander" = 'rs:x'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Which 2007 Cascais has 2014 RS:X Santander. ### Input: CREATE TABLE table_15742 (
    "Discipline" text,
    "2003 Cadiz" text,
    "2007 Cascais" text,
    "2011 Perth" text,
    "2014 Santander" text
) ### Response: SELECT "2007 Cascais" FROM table_15742 WHERE "2014 Santander" = 'rs:x'