
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
Fill in the appropriate brackets with the following numbers: $-13.5$, $5$, $0$, $-10$, $3.14$, $+27$, $-\frac{4}{5}$, $-15\%$, $\frac{21}{3}$.  
Set of negative numbers: $\{\_\_\_\_\_\_\ldots \}$,  
Set of non-negative numbers: $\{\_\_\_\_\_\_\ldots \}$,  
Set of integers: $\{\_\_\_\_\_\_\ldots \}$,  
Set of negative fractions: $\{\_\_\_\_\_\_\ldots \}$.

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