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_3Yy9ZQ):
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_uFocZ):
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 spiders, 3 humans, 4 giraffes, 3 grasshoppers?
 Respond with an integer.

Question 2 (Question id: q_o5wD):
Calculate -4 + 8 - -5.



Return a JSON with each question id as a key.

For every question id, supply an object whose 'answer' field stores the solution.
If the response to a question is an integer that is even, also add the field 'half_answer' to the object which contains the answer integer divided by two.
For string answers, include 'first_char' with the answer’s initial letter.
For last-character tasks, provide 'original_string' alongside the answer.

Now provide the result JSON using the described format.

{"ground_truth": {"q_3Yy9ZQ": {"answer": "s", "first_char": "s", "original_string": "is"}, "q_uFocZ": {"answer": 72, "half_answer": 36}, "q_o5wD": {"answer": 9}}}