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_PEXv):
How many times does the letter "a" appear in the text: "an eBook"? Respond with an integer.

Question 1 (Question id: q_L4h7):
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: "explain"

Question 2 (Question id: q_JMdAzjX7):
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 tigers, 1 sea slug, 4 butterflys, 3 leechs?
 Respond with an integer.

Question 3 (Question id: q_lfcX):
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 lobster, 1 cricket, 2 leechs?
 Respond with an integer.



Return a JSON with each question id as a key.

The value for each key should be an object that contains the answer in the field 'answer'.
If the response to a question is an integer that is even, add the field 'additional_answer_info' containing 'half_answer' (answer ÷ 2) and 'double_answer' (answer × 2).

Now provide the result JSON using the described format.

{"ground_truth": {"q_PEXv": {"answer": 1}, "q_L4h7": {"answer": "n"}, "q_JMdAzjX7": {"answer": 36, "additional_answer_info": {"half_answer": 18, "double_answer": 72}}, "q_lfcX": {"answer": 16, "additional_answer_info": {"half_answer": 8, "double_answer": 32}}}}