sentence: Fire can burn most string very fast.
sentences_after: But in a candle, the string does not burn fast, because the fire melts the wax instead. The wax sometimes drips down the side of the candle. When the melted wax is far from the flame, it gets hard again, and can be used again in a new candle.
concept_name: fire
headings: Candle
categories: Light sources Fire Christian symbols