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_NkL9VG):
Calculate 1 - -1.

Question 1 (Question id: q_P9vz4U):
How many times does the letter "a" appear in the text: "has often"? Respond with an integer.



Create a JSON object keyed by every question id except q_P9vz4U.

The value for each key should be an object that contains the answer in the field 'answer'.
Include an 'answer_type' field (value 'string' or 'integer') for every answer object.
For even integer answers, include 'half_answer' equal to answer ÷ 2.
For last-character tasks, provide 'original_string' alongside the answer.

Now provide the result JSON using the described format.

{"ground_truth": {"q_NkL9VG": {"answer": 2, "answer_type": "integer", "half_answer": 1}}}