human
You can calculate the square of a number like this: 23^2 = (20 + 3)^2 = 20^2 + 3^2 + 2*20*3 = 529. Now do the same for 73^2.
gpt
--- Reasoning ---
1. Is the question multiple-choice question?
No
2. Is it implied multiple-choice question?
No
3. If two experts were independently asked the question, will the final answer be exactly the same?
Yes

--- Answer ---
grounded