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_74ACp):
Calculate 1 + -2 - -8.

Question 1 (Question id: q_rayw):
Calculate 0 + -6 * -4.

Question 2 (Question id: q_BfTkPi):
Solve for u: 16*u + 7 = 39 Respond with an integer.

Question 3 (Question id: q_l7Mokk):
How many times does the letter "s" appear in the text: "Paris She is"? Respond with an integer.



Return a JSON with each question id as a key.

The value for each key should be an object that contains the answer in the field 'answer'.
For even integers, nest 'half_answer' and 'double_answer' inside an additional 'additional_answer_info' field in the answer object.
For last-character tasks, provide 'original_string' alongside the answer.

Now provide the result JSON using the described format.

{"ground_truth": {"q_74ACp": {"answer": 7}, "q_rayw": {"answer": 24, "additional_answer_info": {"half_answer": 12, "double_answer": 48}}, "q_BfTkPi": {"answer": 2, "additional_answer_info": {"half_answer": 1, "double_answer": 4}}, "q_l7Mokk": {"answer": 3}}}