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_8VVyExan):
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: "sometimes"

Question 1 (Question id: q_I9Mfh7):
Solve for r: 4*r - 9 = 19 Respond with an integer.

Question 2 (Question id: q_yVibK7wN):
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 2 elephants, 4 lions, 3 flatworms, 1 insect?
 Respond with an integer.



Your output must be a JSON mapping every question id to its answer info.

Each key’s value must be an object holding an 'answer' field.
Include an 'answer_type' field (value 'string' or 'integer') for every answer object.
If the response to a question is an integer that is even, add the field 'additional_answer_info' containing 'half_answer' (answer ÷ 2) and 'double_answer' (answer × 2).

Add a top-level 'global_metadata' field that records overall stats:
Set 'num_questions_asked' to the count of questions originally displayed.
• num_questions_answered – number you actually answered.
Provide 'questions_with_integer_answers', listing ids with integer answers (or [] if no integers).

Now provide the result JSON using the described format.

{"ground_truth": {"q_8VVyExan": {"answer": "s", "answer_type": "string"}, "q_I9Mfh7": {"answer": 7, "answer_type": "integer"}, "q_yVibK7wN": {"answer": 30, "answer_type": "integer", "additional_answer_info": {"half_answer": 15, "double_answer": 60}}, "global_metadata": {"num_questions_asked": 3, "num_questions_answered": 3, "questions_with_integer_answers": ["q_I9Mfh7", "q_yVibK7wN"]}}}