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.

Example Input: Fact 1: if an object reflects light toward the eye then that object can be seen. 
Fact 2: Light is made up of particles called photons.
Example Output: If an object reflects photons toward the eye then that object can be seen.

Example Input: Fact 1: the mass of an object causes the gravitational force exerted by that object. 
Fact 2: Gravity accelerates mass.
Example Output: gravitational force accelerates objects.

Example Input: Fact 1: Fungi are the only organisms that can decompose wood. 
Fact 2: Wood products rapidly decompose and are biodegradable.
Example Output:
Fungi are the only organisms that can decompose biodegradable products.