
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 a parallelepiped $A B C D A_1 B_1 C_1 D_1$, point $X$ is selected on the edge $A_1 D_1$, and point $Y$ is selected on the edge $B C$. It is known that $A_1 X = 5$, $B Y = 3$, and $B_1 C_1 = 14$. The plane $C_1 X Y$ intersects the ray $D A$ at point $Z$. Find $D Z$.

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