
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
For the proposition in the form of "If $p$, then $q$", the meaning of the symbol "$p \Rightarrow q$" is __________. (Fill in the serial number)

$①$ "If $p$, then $q$" is a true proposition; $②$ "If $p$, then $q$" is a false proposition; $③$ $p$ is a necessary condition for $q$; $④$ $q$ is a sufficient condition for $p$.

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