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_1Ra0Idnk):
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: "systems"

Question 1 (Question id: q_bbYq9dn):
Calculate -8 * -8 - 2.



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

The value for each key should be an object that contains the answer in the field 'answer'.
For even integer answers, include 'half_answer' equal to answer ÷ 2.
If the response to a question is a string, add a 'first_char' field containing its first character.

Now provide the result JSON using the described format.

{"ground_truth": {"q_1Ra0Idnk": {"answer": "s", "first_char": "s"}, "q_bbYq9dn": {"answer": 62, "half_answer": 31}}}