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_VZKjAr6):
Calculate ( 7 - 2 ).

Question 1 (Question id: q_eMVXytPi):
Calculate -5 * 9 * -7.

Question 2 (Question id: q_bbaPAUK):
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: "biology"

Question 3 (Question id: q_s53XR):
Calculate -7 + -8 * -5.



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'.
Include an 'answer_type' field (value 'string' or 'integer') for every answer object.
If the response to a question is an integer that is even, add the field 'additional_answer_info' containing 'half_answer' (answer ÷ 2) and 'double_answer' (answer × 2).
If the response to a question is a string, add a 'first_char' field containing its first character.

Now provide the result JSON using the described format.

{"ground_truth": {"q_VZKjAr6": {"answer": 5, "answer_type": "integer"}, "q_eMVXytPi": {"answer": 315, "answer_type": "integer"}, "q_bbaPAUK": {"answer": "y", "answer_type": "string", "first_char": "y"}, "q_s53XR": {"answer": 33, "answer_type": "integer"}}}