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_Q1IVj9N5):
Calculate -6 * -3.

Question 1 (Question id: q_UZ3ZW8):
Your job is to return the last character of a string as a string. For example, the last char of "hello" is "o". Return the last character of the following string: "and"

Question 2 (Question id: q_sKjltmm):
Find the value of v in the equation: 17*v + 4 = 55 Respond with an integer.

Question 3 (Question id: q_lqyeRc):
Find the value of e in the equation: 19 - 10*e = -111 Respond with an integer.

Question 4 (Question id: q_OEjG):
Calculate 9 / 3.



Create a JSON object keyed by every question id except q_UZ3ZW8.

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.
If the question asks for the last character of a string, add an 'original_string' field containing the source string.

Now provide the result JSON using the described format.

{"ground_truth": {"q_OEjG": {"answer": 3, "answer_type": "integer"}, "q_Q1IVj9N5": {"answer": 18, "answer_type": "integer", "half_answer": 9}, "q_sKjltmm": {"answer": 3, "answer_type": "integer"}, "q_lqyeRc": {"answer": 13, "answer_type": "integer"}}}