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_tiXb6az):
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 1 (Question id: q_JwPUS):
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: "sold"

Question 2 (Question id: q_aZZA5Woy):
Calculate -7 + 9.



Return a JSON with each question id as a key.

The value for each key should be an object that contains the answer in the field 'answer'.
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:
Set 'num_questions_asked' to the count of questions originally displayed.
Add 'num_questions_answered' showing how many questions you answered.
• 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_tiXb6az": {"answer": "d", "original_string": "and"}, "q_JwPUS": {"answer": "d", "original_string": "sold"}, "q_aZZA5Woy": {"answer": 2, "additional_answer_info": {"half_answer": 1, "double_answer": 4}}, "global_metadata": {"num_questions_asked": 3, "num_questions_answered": 3, "questions_with_integer_answers": ["q_aZZA5Woy"]}}}