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_x4bx):
Determine the value of l that satisfies: 19*l + 31 = 50 Respond with an integer.

Question 1 (Question id: q_QK0RZ):
Determine the value of i that satisfies: 4*i - 1 = 47 Respond with an integer.



Create a JSON object keyed by every question id except q_x4bx.

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.
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.
If the question asks for the last character of a string, add an 'original_string' field containing the source string.

Beyond the question-id fields, add a 'global_metadata' object with summary information:
• num_questions_asked: how many questions were asked in total.
Record the answered-question count in the field 'num_questions_answered'.

Now provide the result JSON using the described format.

{"ground_truth": {"q_QK0RZ": {"answer": 12, "answer_type": "integer", "half_answer": 6}, "global_metadata": {"num_questions_asked": 2, "num_questions_answered": 1}}}