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: gills are used for breathing water by aquatic animals. 
Fact 2: Fish are backboned aquatic animals.

Output: fish use gills for breathing water.


Input: Consider Input: Fact 1: having food has a positive impact on an organism 's health. 
Fact 2: And anything edible is food.

Output: Having edible things has a positive impact on an organism 's health.


Input: Consider Input: Fact 1: the vanes rotating in an electric fan causes air to move. 
Fact 2: Air moving through a room helps a person to feel less short of breath.


Output: electric fans can help people feel less short of breath.