instruction:
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.
question:
Question: What determines the color of visible light? Answer: exact wavelength
answer:
Exact wavelength determines the color of visible light.


question:
Question: The anion is the methanoate ion, which is commonly called the what? Answer: formate ion
answer:
The anion is the methanoate ion, which is commonly called the formate ion.


question:
Question: There are about 50,000 vertebrate species, and they are placed in how many different classes? Answer: nine
answer:

There are about 50,000 vertebrate species, and they are placed in nine different classes.