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_9JO0i):
Determine the value of a that satisfies: 15 - 4*a = -21 Respond with an integer.

Question 1 (Question id: q_kORkKrZq):
Determine the value of b that satisfies: 95*b + 1900 = 2090 Respond with an integer.

Question 2 (Question id: q_lDSQ9f4):
Solve for w: 91*w = 1547 Respond with an integer.

Question 3 (Question id: q_nODMIDtD):
Calculate 9 * 2.

Question 4 (Question id: q_fobnuc):
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 giraffes, 4 snakes, 1 lion, 1 bee?
 Respond with an integer.

Question 5 (Question id: q_8ciDfpi):
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: "we"

Question 6 (Question id: q_jjsU3y):
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: "experience"

Question 7 (Question id: q_yCjux):
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 3 humans, 4 jellyfishs, 4 spiders?
 Respond with an integer.

Question 8 (Question id: q_WPrx):
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: "the"



Return a JSON with each question id as a key.

Each key’s value must be an object holding an 'answer' field.
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 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_9JO0i": {"answer": 9}, "q_kORkKrZq": {"answer": 2, "additional_answer_info": {"half_answer": 1, "double_answer": 4}}, "q_lDSQ9f4": {"answer": 17}, "q_nODMIDtD": {"answer": 18, "additional_answer_info": {"half_answer": 9, "double_answer": 36}}, "q_fobnuc": {"answer": 26, "additional_answer_info": {"half_answer": 13, "double_answer": 52}}, "q_8ciDfpi": {"answer": "e", "original_string": "we"}, "q_jjsU3y": {"answer": "e", "original_string": "experience"}, "q_yCjux": {"answer": 38, "additional_answer_info": {"half_answer": 19, "double_answer": 76}}, "q_WPrx": {"answer": "e", "original_string": "the"}}}