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_HsFhR20):
Find the value of e in the equation: 19 - 10*e = -111 Respond with an integer.

Question 1 (Question id: q_imgMB):
Your task is to count how many legs there are in total when given a list of animals.

Now, how many legs are there in total if you have 3 ducks, 3 chickens, 2 cockroachs, 2 beetles, 4 insects?
 Respond with an integer.

Question 2 (Question id: q_thcCVskA):
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: "is"



Output JSON where all question ids are keys, omitting q_imgMB.

Each key’s value must be an object holding an 'answer' field.
For even integer answers, include 'half_answer' equal to answer ÷ 2.
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_thcCVskA": {"answer": "s", "original_string": "is"}, "q_HsFhR20": {"answer": 13}}}