
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
Xiaoli decides which subject among history, geography, or politics to review during tonight's self-study session based on the outcome of a mathematical game. The rules of the game are as follows: in the Cartesian coordinate system, starting from the origin $O$, and then ending at points $P_{1}(-1,0)$, $P_{2}(-1,1)$, $P_{3}(0,1)$, $P_{4}(1,1)$, $P_{5}(1,0)$, to form $5$ vectors. By randomly selecting any two vectors and calculating the dot product $y$ of these two vectors, if $y > 0$, she will review history; if $y=0$, she will review geography; if $y < 0$, she will review politics.
$(1)$ List all possible values of $y$;
$(2)$ Calculate the probability of Xiaoli reviewing history and the probability of reviewing geography.

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