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_AvrxFrf):
Determine the value of w that satisfies: 18*w + 12 = 66 Respond with an integer.

Question 1 (Question id: q_qhuU5UlW):
Solve for p: 12*p + 15 = 51 Respond with an integer.

Question 2 (Question id: q_tv7GLM):
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: "trade"

Question 3 (Question id: q_GgWJCIUD):
Calculate 0 * 6.



Return a JSON with each question id (except for q_tv7GLM) as a key.

Each key’s value must be an object holding an 'answer' field.
For even integer answers, include 'half_answer' equal to answer ÷ 2.
For last-character tasks, provide 'original_string' alongside the answer.

Add a top-level 'global_metadata' field that records overall stats:
• num_questions_asked – total number of questions originally shown.

Now provide the result JSON using the described format.

{"ground_truth": {"q_GgWJCIUD": {"answer": 0, "half_answer": 0}, "q_AvrxFrf": {"answer": 3}, "q_qhuU5UlW": {"answer": 3}, "global_metadata": {"num_questions_asked": 4}}}