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_RkayF6b):
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: "this"

Question 1 (Question id: q_hpxDcneT):
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 beetles, 2 woodlouses, 4 grasshoppers, 2 tigers?
 Respond with an integer.

Question 2 (Question id: q_rZFk07):
Solve for z: 19 - 6*z = 7 Respond with an integer.

Question 3 (Question id: q_QwZyAc):
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 1 ant, 3 snakes, 4 leechs?
 Respond with an integer.



Output JSON where all question ids are keys, omitting q_RkayF6b.

For every question id, supply an object whose 'answer' field stores the solution.
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.
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:
Set 'num_questions_asked' to the count of questions originally displayed.

Now provide the result JSON using the described format.

{"ground_truth": {"q_rZFk07": {"answer": 2, "half_answer": 1}, "q_hpxDcneT": {"answer": 72, "half_answer": 36}, "q_QwZyAc": {"answer": 6, "half_answer": 3}, "global_metadata": {"num_questions_asked": 4}}}