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_eDNG):
Calculate ( ( 2 - -8 + 9 ) ).

Question 1 (Question id: q_hFuSt):
Calculate 3 * 1.

Question 2 (Question id: q_1tmUpjbo):
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: "advancing"

Question 3 (Question id: q_Wb567e):
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: "trends"



Output JSON where all question ids are keys, omitting q_Wb567e.

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.
If the question asks for the last character of a string, add an 'original_string' field containing the source string.

Add a top-level 'global_metadata' field that records overall stats:
• num_questions_asked – total number of questions originally shown.
• num_questions_answered – number you actually answered.

Now provide the result JSON using the described format.

{"ground_truth": {"q_eDNG": {"answer": 19}, "q_hFuSt": {"answer": 3}, "q_1tmUpjbo": {"answer": "g", "original_string": "advancing"}, "global_metadata": {"num_questions_asked": 4, "num_questions_answered": 3}}}