{ "id": "011", "instruction": "Change the opacity of the current layer to 50%.", "difficulty_level": "easy", "type": "Layer", "resources": { "input_file": "011_start.jpg" }, "reference_output": { "expected_file": "011_end.jpg" }, "source": "manual", "layer_related": true, "rubric_file": "011_rubric.json" }