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_S8r3):
Calculate 9 - 9.

Question 1 (Question id: q_C60tPsF):
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: "food"

Question 2 (Question id: q_ese0):
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 cows, 4 birds, 1 human, 3 chickens?
 Respond with an integer.



Produce a JSON object whose top-level keys are the question ids.

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, 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.

Now provide the result JSON using the described format.

{"ground_truth": {"q_S8r3": {"answer": 0, "half_answer": 0}, "q_C60tPsF": {"answer": "d", "first_char": "d"}, "q_ese0": {"answer": 24, "half_answer": 12}}}