
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 a triangle $\triangle ABC$ with angles $A$, $B$, $C$ and their corresponding sides $a$, $b$, $c$. If vectors $\overrightarrow{m}=(a-b,1)$ and $\overrightarrow{n}=(a-c,2)$ are collinear, and $\angle A=120^{\circ}$:

1. Find the ratio $a:b:c$.
2. If the circumradius of $\triangle ABC$ is $14$, find the area of $\triangle ABC$.

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