
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
In the rectangular coordinate system $xoy$, it is known that the vertices of triangle $ABC$ are $A(-1, 0)$, $C(1, 0)$, and vertex $B$ is on the ellipse $\frac{x^{2}}{4} + \frac{y^{2}}{3} = 1$. The value of $\frac{\sin A + \sin C}{\sin B}$ is _______.

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