In this task, you are given a fact statement and question based on the fact. Your task is to generate the correct answer for the question. The answer needs to be generated using the context fact statement.

Fact: an incandescent light bulb converts electricity into heat by sending electricity through a filament. Question: Which is a byproduct of a lightbulb?
warmth

Fact: classifying means grouping materials by their properties. Question: Which would be excluded from a list of objects with metallurgical properties?
bone

Fact: magma is found below the ground. Question: You're most likely to encounter magma at?

an island