Task: Question Answering
Input (English): Let f(l) = -l**3 + 4*l**2 - 2*l - 2. Suppose 0 = -4*y + 3 + 5. Let d be f(y). Solve d*a - w = -9, -w + 5*w = -a - 9 for a.
Output (English): -5