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

Question 1 (Question id: q_phh8K):
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: "economy"

Question 2 (Question id: q_omY4XkzE):
How many times does the letter "r" appear in the text: "him from"? Respond with an integer.

Question 3 (Question id: q_Qdddk):
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: "in"

Question 4 (Question id: q_D3URGDnV):
Determine the value of i that satisfies: i - 12 = 4 Respond with an integer.

Question 5 (Question id: q_5UAxRQ):
Calculate ( 3 * 9 ) - -9.

Question 6 (Question id: q_oOZEB):
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 3 elephants, 1 leech, 2 sea slugs, 2 cats?
 Respond with an integer.

Question 7 (Question id: q_VBHk):
Calculate 3 * -5 * 0.



Your output must be a JSON mapping every question id to its answer info.

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.
For string answers, include 'first_char' with the answer’s initial letter.

Now provide the result JSON using the described format.

{"ground_truth": {"q_euhOUWvy": {"answer": 3}, "q_phh8K": {"answer": "y", "first_char": "y"}, "q_omY4XkzE": {"answer": 1}, "q_Qdddk": {"answer": "n", "first_char": "n"}, "q_D3URGDnV": {"answer": 16, "half_answer": 8}, "q_5UAxRQ": {"answer": 36, "half_answer": 18}, "q_oOZEB": {"answer": 20, "half_answer": 10}, "q_VBHk": {"answer": 0, "half_answer": 0}}}