
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]


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Given the following propositions:
$(①)$ The graph of the function $y=\tan x$ is symmetric about the point $(\frac{kπ}{2},0), (k∈Z)$;
$(②)$ The function $f(x)=\sin |x|$ is a periodic function with the smallest positive period of $π$;
$(③)$ The minimum value of the function $y=\cos ^{2}x+\sin x$ is $-1$;
$(④)$ Let $θ$ be an angle in the second quadrant, then $\tan \frac {θ}{2} > \cos \frac {θ}{2}$, and $\sin \frac {θ}{2} > \cos \frac {θ}{2}$.
The correct proposition number(s) is/are $\_\_\_\_\_\_$.

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