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_0QbO7Q):
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: "race"

Question 1 (Question id: q_udxbzN):
Calculate -3 - -7.



Create a JSON object keyed by every question id except q_0QbO7Q.

Each key’s value must be an object holding an 'answer' field.
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).
For last-character tasks, provide 'original_string' alongside the answer.

Add a top-level 'global_metadata' field that records overall stats:
• num_questions_asked: how many questions were asked in total.
'questions_with_integer_answers' should enumerate every id whose answer is an integer.

Now provide the result JSON using the described format.

{"ground_truth": {"q_udxbzN": {"answer": 4, "answer_type": "integer", "additional_answer_info": {"half_answer": 2, "double_answer": 8}}, "global_metadata": {"num_questions_asked": 2, "questions_with_integer_answers": ["q_udxbzN"]}}}