
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 the following propositions:  
① "In triangle $\triangle ABC$, if $\sin A = \sin B$, then $A = B$" is a true statement;  
② If a moving point $P$ has a constant sum of distances to two fixed points $F_1(-4,0)$ and $F_2(4,0)$ equal to 8, then the trajectory of point $P$ is a line segment;  
③ If $p \land q$ is a false proposition, then both $p$ and $q$ are false propositions;  
④ For $x \in \mathbb{R}$, "$x^2 - 3x > 0$" is a necessary but not sufficient condition for "$x > 4$";  
⑤ If the real numbers 1, $m$, 9 form a geometric sequence, then the eccentricity of the conic curve $\frac{x^2}{m} + y^2 = 1$ is $\frac{\sqrt{6}}{3}$.  
Among these, the correct proposition(s) number(s) is/are \_\_\_\_\_.

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