
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
Consider a regular tetrahedron with vertices $A$, $B$, $C$, and $D$, where each edge has a length of 1 unit. Let $P$ be a point located $\frac{1}{3}$ of the way from $A$ toward $B$, and let $Q$ be a point located $\frac{1}{3}$ of the way from $D$ toward $C$. Find the distance between point $P$ and point $Q$.

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