Here is a set of basic questions producing integer or string outputs. Answer them and format the result precisely with the JSON instructions provided:

Question 0 (Question id: q_pDxhdw7D):
Your job is to return the last character of a string as a string. For example, the last char of "hello" is "o". Return the last character of the following string: "is"

Question 1 (Question id: q_GMKcljB9):
How many times does the letter "a" appear in the text: "men at once"? Respond with an integer.

Question 2 (Question id: q_sfyAm):
Your task is to count how many legs there are in total when given a list of animals.

Now, how many legs are there in total if you have 2 ants, 3 leechs, 2 sheeps?
 Respond with an integer.

Question 3 (Question id: q_g5cT):
Your task is to count how many legs there are in total when given a list of animals.

Now, how many legs are there in total if you have 4 sheeps, 3 ducks, 2 chickens?
 Respond with an integer.

Question 4 (Question id: q_UeT2XYC):
Your task is to count how many legs there are in total when given a list of animals.

Now, how many legs are there in total if you have 4 ducks, 4 cats, 4 crabs?
 Respond with an integer.

Question 5 (Question id: q_cRsscZZ):
Calculate 8 + 8 - 2.

Question 6 (Question id: q_dPhluOT):
Calculate -6 + 8.

Question 7 (Question id: q_MGFyDf):
Find the value of f in the equation: 28*f - 112 = 28 Respond with an integer.

Question 8 (Question id: q_Tl1mg7):
Calculate ( ( -5 + 0 ) * -2 ).



Your output must be a JSON mapping every question id to its answer info.

The value for each key should be an object that contains the answer in the field 'answer'.
If the response to a question is an integer that is even, add the field 'additional_answer_info' containing 'half_answer' (answer ÷ 2) and 'double_answer' (answer × 2).
If the response to a question is a string, add a 'first_char' field containing its first character.
If the question asks for the last character of a string, add an 'original_string' field containing the source string.

Now provide the result JSON using the described format.

{"ground_truth": {"q_pDxhdw7D": {"answer": "s", "first_char": "s", "original_string": "is"}, "q_GMKcljB9": {"answer": 1}, "q_sfyAm": {"answer": 20, "additional_answer_info": {"half_answer": 10, "double_answer": 40}}, "q_g5cT": {"answer": 26, "additional_answer_info": {"half_answer": 13, "double_answer": 52}}, "q_UeT2XYC": {"answer": 64, "additional_answer_info": {"half_answer": 32, "double_answer": 128}}, "q_cRsscZZ": {"answer": 14, "additional_answer_info": {"half_answer": 7, "double_answer": 28}}, "q_dPhluOT": {"answer": 2, "additional_answer_info": {"half_answer": 1, "double_answer": 4}}, "q_MGFyDf": {"answer": 5}, "q_Tl1mg7": {"answer": 10, "additional_answer_info": {"half_answer": 5, "double_answer": 20}}}}