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_EOxhj):
Calculate 6 * 5.

Question 1 (Question id: q_RkVw1):
Solve for r: 11*r + 187 = 319 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'.
Also add the answer type as 'string' or 'integer' to the field 'answer_type' for each object.
For even integer answers, include 'half_answer' equal to answer ÷ 2.

Now provide the result JSON using the described format.

{"ground_truth": {"q_EOxhj": {"answer": 30, "answer_type": "integer", "half_answer": 15}, "q_RkVw1": {"answer": 12, "answer_type": "integer", "half_answer": 6}}}