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: Plants release oxygen during the day but not during the night. 
Fact 2: Oxygen fatigue is a shortage of oxygen reaching the brain.
Example Output: Plants can reduce fatigue during the daytime.

Example Input: Fact 1: sonar is used to find the location of an object. 
Fact 2: Position is just a word for where something is located.
Example Output: Sonar is used to find the position of an object.

Example Input: Fact 1: disease has a negative impact on an organism. 
Fact 2: Plants and animals are organisms.
Example Output:
Disease has a negtive impact on plants and animals.