
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
Arrange a set of data $a_{1}$, $a_{2}$, $a_{3}$, $a_{4}$, $a_{5}$ in ascending order, where each data is less than 0. The median of the sample $a_{1}$, $a_{2}$, $-a_{3}$, $-a_{4}$, $-a_{5}$, 0 can be represented as $\frac{0-a_{5}}{2}$.

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