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_6PvEX):
Calculate 7 - -5 + 7.

Question 1 (Question id: q_D2ZidonS):
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: "feel"

Question 2 (Question id: q_WvcDyWQ):
Solve for n: -11*n - 8 = -173 Respond with an integer.



Output JSON where all question ids are keys, omitting q_WvcDyWQ.

For every question id, supply an object whose 'answer' field stores the solution.
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 question asks for the last character of a string, add an 'original_string' field containing the source string.

Now provide the result JSON using the described format.

{"ground_truth": {"q_6PvEX": {"answer": 19}, "q_D2ZidonS": {"answer": "l", "original_string": "feel"}}}