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: a laser is used for producing light. 
Fact 2: Lasers, for instance, produce coherent light.

Output: Lasers are used to produce a beam that is coherent.


Input: Consider Input: Fact 1: eating food that contains pesticides can have a negative impact on humans. 
Fact 2: Foods such as porous strawberries are hard to wash free of pesticides.

Output: Eating unwashed strawberries can have a negative impact on humans.


Input: Consider Input: Fact 1: All animals are heterotrophs. 
Fact 2: Heterotrophic bacteria derive energy from the breakdown of organic molecules.


Output: All animals derive energy from the breakdown of organic molecules.