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: Mating is generally preceded by courtship. 
Fact 2: For example, a black rooster and a white hen mate, and the resulting offspring are gray.
Example Output: courtship can result in offspring.

Example Input: Fact 1: a solar panel converts sunlight into electricity. 
Fact 2: Sunlight is composed of photons, or particles of solar energy.
Example Output: A solar panel converts photons into electricity.

Example Input: Fact 1: sunlight and rain can cause a rainbow. 
Fact 2: Behind each storm there's a rainbow.
Example Output:
sunlight breaking through rain comes after a storm.