user: Question: Who wrote the episode with a production code greater than 1.4 direcyed by Rick Wallace?
Columns: ['Title', 'Directed by', 'Written by', 'Original air date', 'Prod. code']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['"Pilot"', 'Michael Engler', 'Jeff Judah & Gabe Sachs', 'October 7, 2004', 1.1]
SQL:

assistant: SELECT "Written by" FROM "Table" WHERE "Prod. code" > 1.4 AND "Directed by" = 'Rick Wallace';