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_N6vjB):
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: "and"

Question 1 (Question id: q_OVQeQ):
Calculate 2 - 4 + 7.

Question 2 (Question id: q_WgS2Qz):
Solve for d: 1170*d = 12870 Respond with an integer.



Return a JSON with each question id as a key.

For every question id, supply an object whose 'answer' field stores the solution.
Include an 'answer_type' field (value 'string' or 'integer') for every answer object.
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.

Beyond the question-id fields, add a 'global_metadata' object with summary information:
• num_questions_asked – total number of questions originally shown.
Add 'num_questions_answered' showing how many questions you answered.

Now provide the result JSON using the described format.

{"ground_truth": {"q_N6vjB": {"answer": "d", "answer_type": "string", "first_char": "d"}, "q_OVQeQ": {"answer": 5, "answer_type": "integer"}, "q_WgS2Qz": {"answer": 11, "answer_type": "integer"}, "global_metadata": {"num_questions_asked": 3, "num_questions_answered": 3}}}