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_T74Jzd8):
Determine the value of e that satisfies: e + 19 = 39 Respond with an integer.

Question 1 (Question id: q_Drv5):
Calculate -4 * -4.

Question 2 (Question id: q_hy3H):
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: "to"



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'. If a question involves animal-leg or letter counting, include 'task_type' set to 'leg_counting' or 'letter_counting'.
Also add the answer type as 'string' or 'integer' to the field 'answer_type' for each object.
For even integers, nest 'half_answer' and 'double_answer' inside an additional 'additional_answer_info' field in the answer object.
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.

Now provide the result JSON using the described format.

{"ground_truth": {"q_T74Jzd8": {"answer": 20, "answer_type": "integer", "additional_answer_info": {"half_answer": 10, "double_answer": 40}}, "q_Drv5": {"answer": 16, "answer_type": "integer", "additional_answer_info": {"half_answer": 8, "double_answer": 32}}, "q_hy3H": {"answer": "o", "answer_type": "string", "first_char": "o", "original_string": "to"}}}