Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: A welcome addition to the Lego lineup

This was a joy to construct! The Harry Potter motif pieces are a great addition to the Lego line, and this represents a compromise of recent models having large pieces that 'construct' themselves. I really liked the innovative spiral staircase, and look forward to adding these pieces to my existing castle collections to bring out some really creative buildings.