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_qYP0i):
Find the value of b in the equation: 4*b + 7 = 27 Respond with an integer.

Question 1 (Question id: q_hgqnDYcG):
Find the value of u in the equation: 8 - 11*u = -157 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'.
If the response to a question is an integer that is even, also add the field 'half_answer' to the object which contains the answer integer divided by two.

Now provide the result JSON using the described format.

{"ground_truth": {"q_qYP0i": {"answer": 5}, "q_hgqnDYcG": {"answer": 15}}}