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_3GnEa):
Calculate 9 - -6 + 8.

Question 1 (Question id: q_4lZV):
Calculate 8 * 3.

Question 2 (Question id: q_X9Bi):
Solve for b: 18*b = 72 Respond with an integer.

Question 3 (Question id: q_AB3BkrW):
How many times does the letter "o" appear in the text: "of 20"? Respond with an integer.



Return a JSON with each question id (except for q_X9Bi) as a key.

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, also add the field 'half_answer' to the object which contains the answer integer divided by two.
If the response to a question is a string, add a 'first_char' field containing its first character.
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' should equal the total questions that appeared.

Now provide the result JSON using the described format.

{"ground_truth": {"q_3GnEa": {"answer": 23, "answer_type": "integer"}, "q_AB3BkrW": {"answer": 1, "answer_type": "integer"}, "q_4lZV": {"answer": 24, "answer_type": "integer", "half_answer": 12}, "global_metadata": {"num_questions_asked": 4}}}