
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
Four carpenters were hired by a guest to build a yard. The first carpenter said: "If only I alone were to build the yard, I would complete it in one year." The second carpenter said: "If only I alone were to build the yard, I would complete it in two years." The third carpenter said: "If only I alone were to build the yard, I would complete it in three years." And the fourth carpenter said: "If only I alone were to build the yard, I would complete it in four years." All four carpenters started building the yard together. For how long will they work together to complete the yard?

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