human
Show me, for all combination of single digit numbers, their sum. Due to commutativity, only half of them need to be recited. Your answer should be like this (please fill in the ... with your answer): 1+1 = 2, 1+2 = 3, ...(please fill in with remaining combinations)... 1 + 9 = (your answer here), 2 + 2 = 4, 2 + 3 =... (then repeat for 3 + _ , 4 + _ and so on until 9 + 9).
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