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_CXWe):
How many times does the letter "d" appear in the text: "Archive Foundation"? Respond with an integer.

Question 1 (Question id: q_nI0U3va):
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_jckmFmF):
Find the value of z in the equation: 20 - 4*z = -36 Respond with an integer.

Question 3 (Question id: q_U80H):
Calculate ( 1 + 3 ) / 2.



Return a JSON with each question id as a key.

Each key’s value must be an object holding an 'answer' field.
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_CXWe": {"answer": 1, "answer_type": "integer"}, "q_nI0U3va": {"answer": "d", "answer_type": "string", "original_string": "and"}, "q_jckmFmF": {"answer": 14, "answer_type": "integer", "additional_answer_info": {"half_answer": 7, "double_answer": 28}}, "q_U80H": {"answer": 2, "answer_type": "integer", "additional_answer_info": {"half_answer": 1, "double_answer": 4}}}}