
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
Let $l$ be a line, and $\alpha$, $\beta$ be two different planes. Among the following statements, the correct one is:  
① If $l \parallel \alpha$, $l \parallel \beta$, then $\alpha \parallel \beta$;  
② If $l \parallel \alpha$, $l \perp \beta$, then $\alpha \perp \beta$;  
③ If $\alpha \perp \beta$, $l \perp \alpha$, then $l \perp \beta$;  
④ If $\alpha \perp \beta$, $l \parallel \alpha$, then $l \perp \beta$.

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