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_b153wJ):
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_ypp1Lrqp):
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: "physics"

Question 2 (Question id: q_iZm12):
Calculate 1 - 7 / 7.



Return a JSON with each question id (except for q_b153wJ) as a key.

For every question id, supply an object whose 'answer' field stores the solution.
For even integer answers, include 'half_answer' equal to answer ÷ 2.

Beyond the question-id fields, add a 'global_metadata' object with summary information:
Include 'num_questions_asked' to record the total number of questions presented.
Provide 'questions_with_integer_answers', listing ids with integer answers (or [] if no integers).

Now provide the result JSON using the described format.

{"ground_truth": {"q_iZm12": {"answer": 0, "half_answer": 0}, "q_ypp1Lrqp": {"answer": "s"}, "global_metadata": {"num_questions_asked": 3, "questions_with_integer_answers": ["q_iZm12"]}}}