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_4O2Q):
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_4QTD):
Determine the value of t that satisfies: 19*t + 9 = 218 Respond with an integer.

Question 2 (Question id: q_j4qb):
How many times does the letter "s" appear in the text: "is not"? Respond with an integer.



Produce a JSON object whose top-level keys are the question ids.

Each key’s value must be an object holding an 'answer' field.
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.
• num_questions_answered: count of questions present in your JSON.
• questions_with_integer_answers – list of question ids whose answers are integers (empty list if none).

In addition, add 'combined_results' with:
  • integer_info: per-id integer answers
  • sum_of_answers: their total

Now provide the result JSON using the described format.

{"ground_truth": {"q_4O2Q": {"answer": "d"}, "q_4QTD": {"answer": 11}, "q_j4qb": {"answer": 1}, "global_metadata": {"num_questions_asked": 3, "num_questions_answered": 3, "questions_with_integer_answers": ["q_4QTD", "q_j4qb"]}, "combined_results": {"integer_info": {"q_4QTD": 11, "q_j4qb": 1}, "sum_of_answers": 12}}}