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_QC9a):
Calculate ( 2 * 5 ) / 10.

Question 1 (Question id: q_NXUku):
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: "of"



Create a JSON object keyed by every question id except q_NXUku.

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.
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 – total number of questions originally shown.
• questions_with_integer_answers – list of question ids whose answers are integers (empty list if none).

Attach a 'combined_results' object that contains:
  • integer_info holds all integer answers by id
  • sum_of_answers is their sum

Now provide the result JSON using the described format.

{"ground_truth": {"q_QC9a": {"answer": 1, "answer_type": "integer"}, "global_metadata": {"num_questions_asked": 2, "questions_with_integer_answers": ["q_QC9a"]}, "combined_results": {"integer_info": {"q_QC9a": 1}, "sum_of_answers": 1}}}