
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
There are six boxes of oranges, apples, and pears. The weights of these six boxes (in kilograms) are: 15, 16, 18, 19, 20, and 31. The weight of the apples is half the weight of the pears, and there is only one box of oranges. The box weighing 15 kg contains $\qquad$, the box weighing 19 kg contains $\qquad$, the box weighing 20 kg contains $\qquad$, the box weighing 31 kg contains $\qquad$. (Fill in the blanks with the numbers corresponding to the fruit types below).
1. Oranges
2. Apples
3. Pears

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