Let $z$ be a complex variable. If $f(z)=\frac{\sin (\pi z)}{z^{2}(z-2)}$ and $C$ is the circle in the complex plane with $|z|=3$ then $\oint_{C} f(z) d z$ is $\_\_\_\_\_\_$.
- $\pi^{2} j$
- $j \pi\left(\frac{1}{2}-\pi\right)$
- $j \pi\left(\frac{1}{2}+\pi\right)$
- $-\pi^{2} j$