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.
Example: Question: Which is an example of a renewable energy resource? Answer: Biomass
Example solution: Biomass is an example of a renewable energy resource.
Example explanation: The output clearly summarizes the question and answer and hence is correct

Problem: Question: Structural adaptations in flying animals often contribute to reduced what? Answer: body mass

Solution: Structural adaptations in flying animals often contribute to reduced body mass.