
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given the polar equation of curve $C$ is $\rho\sin^2\theta-8\cos\theta=0$, with the pole as the origin of the Cartesian coordinate system $xOy$, and the polar axis as the positive half-axis of $x$. In the Cartesian coordinate system, a line $l$ with an inclination angle $\alpha$ passes through point $P(2,0)$.  
$(1)$ Write the Cartesian equation of curve $C$ and the parametric equation of line $l$;  
$(2)$ Suppose the polar coordinates of points $Q$ and $G$ are $(2, \frac{3\pi}{2})$ and $(2,\pi)$, respectively. If line $l$ passes through point $Q$ and intersects curve $C$ at points $A$ and $B$, find the area of $\triangle GAB$.

Present the answer in LaTex format: \boxed{Your answer}
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