Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Ex Input:
Question: On which ridge does iceland sit? Answer: mid-atlantic ridge

Ex Output:
Most mid-ocean ridges are located deep below the sea. The island of Iceland sits right on the Mid-Atlantic ridge ( Figure below ).

Ex Input:
Question: What are interferons? Answer: cytokines

Ex Output:
Figure 42.4 Interferons are cytokines that are released by a cell infected with a virus. Response of neighboring cells to interferon helps stem the infection.

Ex Input:
Question: What are composed of a phosphate group, a sugar, and one of five different nitrogenous bases. Answer: nucleotides

Ex Output:
Nucleotides are composed of a phosphate group, a sugar, and one of five different nitrogenous bases.