Task: Question Understanding
Input (English): Question: Green leaves changing to shades of gold and orange in the autumn is what kind of change? (A) A chemical change, because chlorophyll breaks down into other chemicals. (B) A physical change, because color is only a physical property. (C) A chemical change, because the acid rain eventually affects the color of the leaves. (D) A physical change, because sap is moving into the roots of the trees.?
Output (English): leaves, changing, gold, orange, autumn