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_tqMnn7lk):
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: "system"

Question 1 (Question id: q_laCs):
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: "water"

Question 2 (Question id: q_cO0zT):
Calculate -7 - -9 * 2.

Question 3 (Question id: q_c30tEW1Z):
Calculate 5 - 4.

Question 4 (Question id: q_LA1s):
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: "that"



Produce a JSON object whose top-level keys are the question ids.

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.
If the response to a question is an integer that is even, also add the field 'half_answer' to the object which contains the answer integer divided by two.
For last-character tasks, provide 'original_string' alongside the answer.

Add a top-level 'global_metadata' field that records overall stats:
• num_questions_asked: how many questions were asked in total.
'num_questions_answered' must hold the number of answered questions.

Now provide the result JSON using the described format.

{"ground_truth": {"q_tqMnn7lk": {"answer": "m", "answer_type": "string", "original_string": "system"}, "q_laCs": {"answer": "r", "answer_type": "string", "original_string": "water"}, "q_cO0zT": {"answer": 11, "answer_type": "integer"}, "q_c30tEW1Z": {"answer": 1, "answer_type": "integer"}, "q_LA1s": {"answer": "t", "answer_type": "string", "original_string": "that"}, "global_metadata": {"num_questions_asked": 5, "num_questions_answered": 5}}}