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_P77S97a):
How many times does the letter "s" appear in the text: "on this"? Respond with an integer.

Question 1 (Question id: q_SpFdqB):
Find the value of b in the equation: 18*b - 21 = 105 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.
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.
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_P77S97a": {"answer": 1}, "q_SpFdqB": {"answer": 7}}}