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_vhO9z):
Find the value of e in the equation: 17*e + 63 = 386 Respond with an integer.

Question 1 (Question id: q_9jl9LRHB):
Calculate -8 - ( -8 + -3 ).

Question 2 (Question id: q_CiXZY):
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: "this"



Return a JSON with each question id as a key.

Each key’s value must be an object holding an 'answer' field.
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).
For last-character tasks, provide 'original_string' alongside the answer.

Now provide the result JSON using the described format.

{"ground_truth": {"q_vhO9z": {"answer": 19}, "q_9jl9LRHB": {"answer": 3}, "q_CiXZY": {"answer": "s", "original_string": "this"}}}