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_9umDRFJj):
How many times does the letter "a" appear in the text: "give attention"? Respond with an integer.

Question 1 (Question id: q_pIw94SXI):
How many times does the letter "t" appear in the text: "obtain permission"? Respond with an integer.

Question 2 (Question id: q_mY4ymq58):
Solve for b: 18*b = 72 Respond with an integer.

Question 3 (Question id: q_RWv1g0):
Calculate -7 - 1 - -9.

Question 4 (Question id: q_e9dLO):
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: "strength"



Return a JSON with each question id as a key.

For every question id, supply an object whose 'answer' field stores the solution.
If the response to a question is an integer that is even, also add the field 'half_answer' to the object which contains the answer integer divided by two.
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_9umDRFJj": {"answer": 1}, "q_pIw94SXI": {"answer": 1}, "q_mY4ymq58": {"answer": 4, "half_answer": 2}, "q_RWv1g0": {"answer": 1}, "q_e9dLO": {"answer": "h", "original_string": "strength"}}}