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_hskopb1):
Calculate 7 + -4.

Question 1 (Question id: q_1SRqf):
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: "some"

Question 2 (Question id: q_878aMLk):
How many times does the letter "i" appear in the text: "independent government"? Respond with an integer.

Question 3 (Question id: q_BR4tQ):
Calculate 5 + 1 * 7.

Question 4 (Question id: q_iGQj):
Calculate 1 - -3 + 2.



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

Each key’s value must be an object holding an 'answer' field.
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).

Now provide the result JSON using the described format.

{"ground_truth": {"q_hskopb1": {"answer": 3}, "q_1SRqf": {"answer": "e"}, "q_878aMLk": {"answer": 1}, "q_BR4tQ": {"answer": 12, "additional_answer_info": {"half_answer": 6, "double_answer": 24}}, "q_iGQj": {"answer": 6, "additional_answer_info": {"half_answer": 3, "double_answer": 12}}}}