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_70GY):
Calculate 0 * 1.

Question 1 (Question id: q_6vH8wZ0P):
How many times does the letter "k" appear in the text: "Gutenberg eBooks"? Respond with an integer.

Question 2 (Question id: q_9PJ717ya):
Calculate ( ( ( 3 + 5 ) ) ).



Return a JSON with each question id (except for q_70GY) as a key.

For every question id, supply an object whose 'answer' field stores the solution.
For even integers, nest 'half_answer' and 'double_answer' inside an additional 'additional_answer_info' field in the answer object.
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_9PJ717ya": {"answer": 8, "additional_answer_info": {"half_answer": 4, "double_answer": 16}}, "q_6vH8wZ0P": {"answer": 1}}}