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_bC724k):
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: "just"

Question 1 (Question id: q_0haOW):
How many times does the letter "a" appear in the text: "advertisement hall he"? Respond with an integer.



Create a JSON object keyed by every question id except q_bC724k.

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, add the field 'additional_answer_info' containing 'half_answer' (answer ÷ 2) and 'double_answer' (answer × 2).

Now provide the result JSON using the described format.

{"ground_truth": {"q_0haOW": {"answer": 2, "answer_type": "integer", "additional_answer_info": {"half_answer": 1, "double_answer": 4}}}}