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_FGS5):
How many times does the letter "f" appear in the text: "freely distributed in"? Respond with an integer.

Question 1 (Question id: q_XBCYTT):
Solve for r: 4*r - 9 = 19 Respond with an integer.

Question 2 (Question id: q_Yl85Nd):
Calculate -7 * -1.



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

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.
For last-character tasks, provide 'original_string' alongside the answer.

Now provide the result JSON using the described format.

{"ground_truth": {"q_FGS5": {"answer": 1}, "q_XBCYTT": {"answer": 7}, "q_Yl85Nd": {"answer": 7}}}