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_naN6Lj9):
How many times does the letter "i" appear in the text: "and again"? Respond with an integer.

Question 1 (Question id: q_ncIAW):
Determine the value of v that satisfies: 60*v = 480 Respond with an integer.



Produce a JSON object whose top-level keys are the question ids.

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).
If the response to a question is a string, add a 'first_char' field containing its first character.
For last-character tasks, provide 'original_string' alongside the answer.

Now provide the result JSON using the described format.

{"ground_truth": {"q_naN6Lj9": {"answer": 1}, "q_ncIAW": {"answer": 8, "additional_answer_info": {"half_answer": 4, "double_answer": 16}}}}