Combine the given two facts to write a concluding fact. Note that there should be some parts of the first and second facts that are not mentioned in this conclusion fact. Your combined fact should be the result of a chain between the two facts. Chains form when two facts connect together to produce a concluding fact. An example of a chain is: "pesticides cause pollution" (fact1) + "pollution can harm animals" (fact2) → "pesticides can harm animals" (conclusion fact). Parts of the concluding fact overlap with the first and the second fact. To construct such a  concluding fact, a useful way is to borrow the subject from one fact and the ending conclusions from another fact.

Input: Consider Input: Fact 1: Nephrons are the structural and functional units of the kidneys. 
Fact 2: Finally, the fluid in the nephron reaches a collecting duct .

Output: fluid in the kidneys collect into ducts.


Input: Consider Input: Fact 1: refracting sunlight causes sunlight to split into different colors. 
Fact 2: When Sunlight passes through a prism, the light is separated into a rainbow of different colors.

Output: Refracting sunlight causes sunlight to split into colors and form a rainbow.


Input: Consider Input: Fact 1: Experiments are often done in a lab. 
Fact 2: Labs exist to make money.


Output: experiments often exist to make money.