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_jmxK):
Find the value of e in the equation: 27 - e = 12 Respond with an integer.

Question 1 (Question id: q_TpRK):
Calculate -4 - -7.

Question 2 (Question id: q_UvU7T):
Calculate -3 * -7.



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'.
Also add the answer type as 'string' or 'integer' to the field 'answer_type' for each object.
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_jmxK": {"answer": 15, "answer_type": "integer"}, "q_TpRK": {"answer": 3, "answer_type": "integer"}, "q_UvU7T": {"answer": 21, "answer_type": "integer"}}}