TASK DEFINITION: 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.
PROBLEM: Question: Who lack some of the defining traits of chordates? Answer: adult humans

SOLUTION: Adult humans lack some of the defining traits of chordates.

PROBLEM: Question: What kind of viscosity is found in long-chain hydrocarbons? Answer: highly viscous

SOLUTION: Highly viscous kind of viscosity is found in long-chain hydrocarbons.

PROBLEM: Question: What do we call the only light that people can see? Answer: visible light

SOLUTION:
We call the only light that people can see visible light.