
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
Given two points M(-2, 0), N(2, 0), and a moving point P in the coordinate plane satisfying $|\overrightarrow{MN}| \cdot |\overrightarrow{MP}| + \overrightarrow{MN} \cdot \overrightarrow{NP} = 0$, the equation of the trajectory of point P (x, y) is __________.

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