
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
A rectangular yard is 30 meters long and 10 meters wide. It contains one isosceles right triangle and a rectangular flower bed. The non-parallel side of the triangle is on the yard's longer side, and the triangle's leg length is 10 meters. The rectangular flower bed has dimensions of 5 meters by 10 meters. What fraction of the yard is occupied by the flower beds?
A) $\frac{1}{4}$
B) $\frac{1}{3}$
C) $\frac{1}{2}$
D) $\frac{2}{3}$
E) $\frac{3}{4}$

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