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_8CvAj1Cv):
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 1 (Question id: q_rclbr):
Calculate ( -1 * -5 ) * 1.

Question 2 (Question id: q_OWIBX8):
Find the value of u in the equation: 378*u - 15 = 1119 Respond with an integer.

Question 3 (Question id: q_v8SaS):
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: "how"



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 a question involves animal-leg or letter counting, include 'task_type' set to 'leg_counting' or 'letter_counting'.
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, add the field 'additional_answer_info' containing 'half_answer' (answer ÷ 2) and 'double_answer' (answer × 2).
For last-character tasks, provide 'original_string' alongside the answer.

Now provide the result JSON using the described format.

{"ground_truth": {"q_8CvAj1Cv": {"answer": "d", "answer_type": "string", "original_string": "and"}, "q_rclbr": {"answer": 5, "answer_type": "integer"}, "q_OWIBX8": {"answer": 3, "answer_type": "integer"}, "q_v8SaS": {"answer": "w", "answer_type": "string", "original_string": "how"}}}