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_Yh0Wyg):
Find the value of r in the equation: 80*r + 272 = 1552 Respond with an integer.

Question 1 (Question id: q_QkB9Qb57):
How many times does the letter "z" appear in the text: "yourself be hypnotized"? Respond with an integer.

Question 2 (Question id: q_7gGFsNnR):
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: "popular"



Return a JSON with each question id (except for q_Yh0Wyg) as a key.

The value for each key should be an object that contains the answer in the field 'answer'.
Also add the answer type as 'string' or 'integer' to the field 'answer_type' for each object.
For even integer answers, include 'half_answer' equal to answer ÷ 2.
For string answers, include 'first_char' with the answer’s initial letter.

Now provide the result JSON using the described format.

{"ground_truth": {"q_7gGFsNnR": {"answer": "r", "answer_type": "string", "first_char": "r"}, "q_QkB9Qb57": {"answer": 1, "answer_type": "integer"}}}