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_BcwX9W):
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: "of"

Question 1 (Question id: q_d4Tl4ovh):
Calculate ( 6 + -4 ).

Question 2 (Question id: q_mCXMP):
Calculate -5 - -7 + 3.

Question 3 (Question id: q_Dk0MFv7):
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 woodlouse, 2 butterflys, 2 tigers, 4 wasps, 2 cats?
 Respond with an integer.

Question 4 (Question id: q_lypN):
Determine the value of i that satisfies: 16*i + 20 = 84 Respond with an integer.

Question 5 (Question id: q_8kIgHw):
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: "is"

Question 6 (Question id: q_Kdmf4):
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 4 sea slugs, 4 ducks, 2 fireflys?
 Respond with an integer.



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

Each key’s value must be an object holding an 'answer' field.
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.
When counting animal legs, include an 'animal_types' list of the distinct animal names (singular, sorted).

Now provide the result JSON using the described format.

{"ground_truth": {"q_BcwX9W": {"answer": "f", "first_char": "f"}, "q_d4Tl4ovh": {"answer": 2, "half_answer": 1}, "q_mCXMP": {"answer": 5}, "q_Dk0MFv7": {"answer": 66, "half_answer": 33, "animal_types": ["butterfly", "cat", "tiger", "wasp", "woodlouse"]}, "q_lypN": {"answer": 4, "half_answer": 2}, "q_8kIgHw": {"answer": "s", "first_char": "s"}, "q_Kdmf4": {"answer": 20, "half_answer": 10, "animal_types": ["duck", "firefly", "sea slug"]}}}