
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
The line $l$ intersects the circle $(x+1)^2+(y-2)^2=5-a$ (where $a<3$) at two points $A$ and $B$. The midpoint of the chord $AB$ is $M(0,1)$. Find the equation of the line $l$.

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