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_eabp):
Calculate 3 - -7.

Question 1 (Question id: q_lyE3Pp2o):
How many times does the letter "f" appear in the text: "him for"? Respond with an integer.

Question 2 (Question id: q_lgJjXu):
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 cows, 2 crickets, 2 woodlouses, 2 birds, 4 sea slugs?
 Respond with an integer.

Question 3 (Question id: q_0y2SW1):
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 sheeps, 3 woodlouses, 4 snakes, 2 ants?
 Respond with an integer.



Return a JSON with each question id as a key.

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, add the field 'additional_answer_info' containing 'half_answer' (answer ÷ 2) and 'double_answer' (answer × 2).
If the response to a question is a string, add a 'first_char' field containing its first character.
For last-character tasks, provide 'original_string' alongside the answer.

Now provide the result JSON using the described format.

{"ground_truth": {"q_eabp": {"answer": 10, "additional_answer_info": {"half_answer": 5, "double_answer": 20}}, "q_lyE3Pp2o": {"answer": 1}, "q_lgJjXu": {"answer": 60, "additional_answer_info": {"half_answer": 30, "double_answer": 120}}, "q_0y2SW1": {"answer": 66, "additional_answer_info": {"half_answer": 33, "double_answer": 132}}}}