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_OjQWDgqz):
Calculate 7 + -4 - 1.

Question 1 (Question id: q_oyGSxJY):
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: "of"



Return a JSON with each question id as a key.

For every question id, supply an object whose 'answer' field stores the solution.
Include an 'answer_type' field (value 'string' or 'integer') for every answer object.
For even integer answers, include 'half_answer' equal to answer ÷ 2.
For string answers, include 'first_char' with the answer’s initial letter.

Now provide the result JSON using the described format.

{"ground_truth": {"q_OjQWDgqz": {"answer": 2, "answer_type": "integer", "half_answer": 1}, "q_oyGSxJY": {"answer": "f", "answer_type": "string", "first_char": "f"}}}