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_Ki7YR07):
Calculate 7 - -5 + 7.

Question 1 (Question id: q_dzjQ):
Solve for x: 112*x + 384 = 1280 Respond with an integer.

Question 2 (Question id: q_RXtn):
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: "biology"

Question 3 (Question id: q_LJg7kv):
How many times does the letter "r" appear in the text: "South for"? Respond with an integer.



Return a JSON with each question id as a key.

Each key’s value must be an object holding an 'answer' field. If a question involves animal-leg or letter counting, include 'task_type' set to 'leg_counting' or 'letter_counting'.
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:
• num_questions_asked – total number of questions originally shown.
Fill 'questions_with_integer_answers' with the ids of integer-answer questions (leave empty when none).

Now provide the result JSON using the described format.

{"ground_truth": {"q_Ki7YR07": {"answer": 19}, "q_dzjQ": {"answer": 8, "additional_answer_info": {"half_answer": 4, "double_answer": 16}}, "q_RXtn": {"answer": "y"}, "q_LJg7kv": {"answer": 1, "task_type": "letter_counting"}, "global_metadata": {"num_questions_asked": 4, "questions_with_integer_answers": ["q_Ki7YR07", "q_dzjQ", "q_LJg7kv"]}}}