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_cICA):
Calculate -8 + 4 + 7.

Question 1 (Question id: q_8Fpjs):
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: "patterns"

Question 2 (Question id: q_t2mxConU):
Calculate ( 9 * 0 ).

Question 3 (Question id: q_xCw0):
Find the value of b in the equation: 256*b + 144 = 1680 Respond with an integer.



Return a JSON with each question id (except for q_cICA) 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:
• 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_t2mxConU": {"answer": 0, "additional_answer_info": {"half_answer": 0, "double_answer": 0}}, "q_8Fpjs": {"answer": "s", "first_char": "s", "original_string": "patterns"}, "q_xCw0": {"answer": 6, "additional_answer_info": {"half_answer": 3, "double_answer": 12}}, "global_metadata": {"num_questions_asked": 4, "questions_with_integer_answers": ["q_t2mxConU", "q_xCw0"]}}}