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_MelZ):
Calculate 1 - -3 + 2.

Question 1 (Question id: q_ig8TZj):
How many times does the letter "a" appear in the text: "a few"? Respond with an integer.

Question 2 (Question id: q_KR5uK):
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"



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

The value for each key should be an object that contains the answer in the field 'answer'.
For even integers, nest 'half_answer' and 'double_answer' inside an additional 'additional_answer_info' field in the answer object.
For string answers, include 'first_char' with the answer’s initial letter.

Now provide the result JSON using the described format.

{"ground_truth": {"q_ig8TZj": {"answer": 1}, "q_KR5uK": {"answer": "s", "first_char": "s"}}}