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: Chloroplasts contain the green pigment chlorophyll. 
Fact 2: Mitochondrion and chloroplast for example are organelles.
Example Output: organelles contain chlorophyll.

Example Input: Fact 1: hitting an object causes the particles in that object to vibrate. 
Fact 2: Sounds are caused by vibrations.
Example Output: hitting an object causes Sounds.

Example Input: Fact 1: high mountains with well-rounded peaks can be formed by collision of crustal plates. 
Fact 2: When plates collide, the earthquake is the result from the collision.
Example Output:
earthquakes can result in formation of high mountains with well-rounded peaks.