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_YwgrFr):
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"

Question 1 (Question id: q_C1wJ):
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: "and"

Question 2 (Question id: q_BJIxjAy):
Calculate ( 2 + 9 ).

Question 3 (Question id: q_u7zxcXO):
Calculate 9 / 3 + -2.



Return a JSON with each question id as a key.

For every question id, supply an object whose 'answer' field stores the solution.
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.
For last-character tasks, provide 'original_string' alongside the answer.

Beyond the question-id fields, add a 'global_metadata' object with summary information:
Include 'num_questions_asked' to record the total number of questions presented.
'num_questions_answered' must hold the number of answered questions.
• questions_with_integer_answers – list of question ids whose answers are integers (empty list if none).

Now provide the result JSON using the described format.

{"ground_truth": {"q_YwgrFr": {"answer": "f", "first_char": "f", "original_string": "of"}, "q_C1wJ": {"answer": "d", "first_char": "d", "original_string": "and"}, "q_BJIxjAy": {"answer": 11}, "q_u7zxcXO": {"answer": 1}, "global_metadata": {"num_questions_asked": 4, "num_questions_answered": 4, "questions_with_integer_answers": ["q_BJIxjAy", "q_u7zxcXO"]}}}