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.

Ex Input:
Fact 1: a valley is formed by a river flowing. 
Fact 2: Examples are Napa Valley and Sonoma Valley.

Ex Output:
Napa and Sonoma were formed by a river flowing.


Ex Input:
Fact 1: a greenhouse is used to protect plants by keeping them warm. 
Fact 2: Another well known plant is the Mesquite Bush.

Ex Output:
a greenhouse is used to protect bushes by keeping them warm.


Ex Input:
Fact 1: Sepals are usually green, which camouflages the bud from possible consumers. 
Fact 2: Daylilies have colored sepals.

Ex Output:

daylilies use camouflauge to protect their buds.