
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
In the quadrilateral pyramid \(P-ABCD\), given that \(AB\) is parallel to \(CD\), \(AB\) is perpendicular to \(AD\), \(AB=4\), \(AD=2\sqrt{2}\), \(CD=2\), and \(PA\) is perpendicular to the plane \(ABCD\), with \(PA=4\). Let \(Q\) be a point on line segment \(PB\) such that the sine of the angle between line \(QC\) and plane \(PAC\) is \(\frac{\sqrt{3}}{3}\). Find the value of \(\frac{PQ}{PB}\).

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