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_taMIqML):
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: "what"

Question 1 (Question id: q_MYs1D4Q):
Solve for v: 15*v - 10 = 230 Respond with an integer.

Question 2 (Question id: q_WJyrIdG):
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: "fragility"

Question 3 (Question id: q_Uc77xI):
Calculate -4 * -2.



Return a JSON with each question id as a key.

For every question id, supply an object whose 'answer' field stores the solution.
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).
If the response to a question is a string, add a 'first_char' field containing its first character.
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_taMIqML": {"answer": "t", "answer_type": "string", "first_char": "t", "original_string": "what"}, "q_MYs1D4Q": {"answer": 16, "answer_type": "integer", "additional_answer_info": {"half_answer": 8, "double_answer": 32}}, "q_WJyrIdG": {"answer": "y", "answer_type": "string", "first_char": "y", "original_string": "fragility"}, "q_Uc77xI": {"answer": 8, "answer_type": "integer", "additional_answer_info": {"half_answer": 4, "double_answer": 16}}}}