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_cXz5SVXK):
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: "microscopes"

Question 1 (Question id: q_rWjDjFPV):
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: "companies"

Question 2 (Question id: q_U7aQ):
Determine the value of b that satisfies: 16*b + 18 = 146 Respond with an integer.



Output JSON where all question ids are keys, omitting q_cXz5SVXK.

Each key’s value must be an object holding an 'answer' field.
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 question asks for the last character of a string, add an 'original_string' field containing the source string.

Beyond the question-id fields, add a 'global_metadata' object with summary information:
'num_questions_asked' should equal the total questions that appeared.

Now provide the result JSON using the described format.

{"ground_truth": {"q_rWjDjFPV": {"answer": "s", "original_string": "companies"}, "q_U7aQ": {"answer": 8, "half_answer": 4}, "global_metadata": {"num_questions_asked": 3}}}