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_kwQRJu2f):
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: "for"

Question 1 (Question id: q_vkN7):
Solve for k: 20*k - 2 = 398 Respond with an integer.

Question 2 (Question id: q_kM6yq):
Calculate ( 4 + 5 ) - 6.



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

The value for each key should be an object that contains the answer in the field 'answer'. Additionally, if the task is about counting legs of animals or counting letters in a string, add the task_type field with value 'leg_counting' or 'letter_counting', respectively.
If the response to a question is an integer that is even, add the field 'additional_answer_info' containing 'half_answer' (answer ÷ 2) and 'double_answer' (answer × 2).
If the response to a question is a string, add a 'first_char' field containing its first character.
For last-character tasks, provide 'original_string' alongside the answer.

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.

Now provide the result JSON using the described format.

{"ground_truth": {"q_kwQRJu2f": {"answer": "r", "first_char": "r", "original_string": "for"}, "q_vkN7": {"answer": 20, "additional_answer_info": {"half_answer": 10, "double_answer": 40}}, "q_kM6yq": {"answer": 3}, "global_metadata": {"num_questions_asked": 3}}}