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_ki0ON1aW):
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: "not"

Question 1 (Question id: q_lkKs):
Solve for u: 95*u = 285 Respond with an integer.

Question 2 (Question id: q_y6uvrzj):
Calculate ( 1 / 1 ).

Question 3 (Question id: q_Py3Q2vu):
Calculate 6 + -3 - -1.

Question 4 (Question id: q_scrLTh8W):
How many times does the letter "d" appear in the text: "must study"? Respond with an integer.



Your output must be a JSON mapping every question id to its answer info.

The value for each key should be an object that contains the answer in the field 'answer'.
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.
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_ki0ON1aW": {"answer": "t", "first_char": "t", "original_string": "not"}, "q_lkKs": {"answer": 3}, "q_y6uvrzj": {"answer": 1}, "q_Py3Q2vu": {"answer": 4, "half_answer": 2}, "q_scrLTh8W": {"answer": 1}}}