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.

Ex Input:
Fact 1: irradiating food can be used to kill existing microorganisms in the food. 
Fact 2: Irradiation causes chemical changes.

Ex Output:
chemical changes can be used to kill existing microorganisms in the food.


Ex Input:
Fact 1: DNA contains genetic instructions for proteins, and RNA helps assemble the proteins. 
Fact 2: DNA is the genetic material responsible for heredity.

Ex Output:
The genetic material responsible for heredity contains instructions for proteins.


Ex Input:
Fact 1: sharpening an object causes that object to change shape. 
Fact 2: Work happens when a force moves or changes the shape of an object.

Ex Output:

Sharpening an object can be considered work.