In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Ex Input:
Question: Natural convection is driven by what forces? Answer: buoyant

Ex Output:
Natural convection is driven by buoyant forces.

Ex Input:
Question: What do concentric circles on a topographic map indicate? Answer: a hill

Ex Output:
A hill do concentric circles on a topographic map indicate.

Ex Input:
Question: What kind of a resource is soil, for human purposes? Answer: nonrenewable resource

Ex Output:
Soil, for human purposes, is a(n) nonrenewable resource.