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_o8CC):
Calculate 7 / 1 + 7.

Question 1 (Question id: q_4XPB):
Calculate ( 7 - ( ( ( 2 / 2 ) ) ) ).

Question 2 (Question id: q_P275G):
How many times does the letter "i" appear in the text: "have revolutionized agriculture"? Respond with an integer.

Question 3 (Question id: q_vZ1nHMhY):
How many times does the letter "h" appear in the text: "said he addressing"? Respond with an integer.

Question 4 (Question id: q_F6JDY):
How many times does the letter "u" appear in the text: "the United"? Respond with an integer.

Question 5 (Question id: q_Lxvn):
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"



Output JSON where all question ids are keys, omitting q_4XPB, q_P275G.

The value for each key should be an object that contains the answer in the field 'answer'.
For even integers, nest 'half_answer' and 'double_answer' inside an additional 'additional_answer_info' field in the answer object.
For string answers, include 'first_char' with the answer’s initial letter.

Now provide the result JSON using the described format.

{"ground_truth": {"q_o8CC": {"answer": 14, "additional_answer_info": {"half_answer": 7, "double_answer": 28}}, "q_Lxvn": {"answer": "d", "first_char": "d"}, "q_vZ1nHMhY": {"answer": 1}, "q_F6JDY": {"answer": 1}}}