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_htvvSNNK):
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: "environments"

Question 1 (Question id: q_QAzZS1):
Calculate ( 9 * 5 ).

Question 2 (Question id: q_V7qT):
How many times does the letter "o" appear in the text: "includes information"? Respond with an integer.

Question 3 (Question id: q_OaEV7ND):
How many times does the letter "f" appear in the text: "permanent future for"? Respond with an integer.



Output JSON where all question ids are keys, omitting q_OaEV7ND.

The value for each key should be an object that contains the answer in the field 'answer'.
Also add the answer type as 'string' or 'integer' to the field 'answer_type' for each object.
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_QAzZS1": {"answer": 45, "answer_type": "integer"}, "q_V7qT": {"answer": 2, "answer_type": "integer", "additional_answer_info": {"half_answer": 1, "double_answer": 4}}, "q_htvvSNNK": {"answer": "s", "answer_type": "string"}}}