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_Y4i0):
Calculate 9 * ( ( ( 1 * 2 ) ) ).

Question 1 (Question id: q_9oak):
Find the value of d in the equation: 216*d - 2 = 3670 Respond with an integer.

Question 2 (Question id: q_vYuCJ1):
Find the value of a in the equation: 18*a + 3 = 309 Respond with an integer.



Create a JSON object keyed by every question id except q_vYuCJ1.

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.
If the response to a question is a string, add a 'first_char' field containing its first character.

Now provide the result JSON using the described format.

{"ground_truth": {"q_9oak": {"answer": 17, "answer_type": "integer"}, "q_Y4i0": {"answer": 18, "answer_type": "integer", "half_answer": 9}}}