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_hKIDO):
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: "by"

Question 1 (Question id: q_3XSw7X):
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: "in"

Question 2 (Question id: q_tG6X):
Calculate 4 + 9.

Question 3 (Question id: q_0A1Mzrx7):
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 humans, 4 chickens, 4 wasps?
 Respond with an integer.

Question 4 (Question id: q_lEDb2):
Calculate -2 + 5 - 0.



Create a JSON object keyed by every question id except q_0A1Mzrx7.

Each key’s value must be an object holding an 'answer' field.
For even integer answers, include 'half_answer' equal to answer ÷ 2.
For last-character tasks, provide 'original_string' alongside the answer.

Now provide the result JSON using the described format.

{"ground_truth": {"q_hKIDO": {"answer": "y", "original_string": "by"}, "q_tG6X": {"answer": 13}, "q_3XSw7X": {"answer": "n", "original_string": "in"}, "q_lEDb2": {"answer": 3}}}