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_UEGMQ):
Solve for l: 20*l - 25 = 135 Respond with an integer.

Question 1 (Question id: q_iwaJm0):
Calculate 6 * 5.



Return a JSON with each question id as a key.

Each key’s value must be an object holding an 'answer' field.
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.
For last-character tasks, provide 'original_string' alongside the answer.

Now provide the result JSON using the described format.

{"ground_truth": {"q_UEGMQ": {"answer": 8, "half_answer": 4}, "q_iwaJm0": {"answer": 30, "half_answer": 15}}}