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: when the body is hot , sweat is produced to cool the body. 
Fact 2: The sweat evaporates from your skin, cooling it.
Example Output: Your body uses evaporation to cool it down.

Example Input: Fact 1: Bacteria may spread directly from one person to another. 
Fact 2: People can be infected or killed by the bacteria.
Example Output: People can spread death from one person to another.

Example Input: Fact 1: a plant requires sunlight for photosynthesis. 
Fact 2: Sunlight is energy released from fusion reactions in the sun.
Example Output:
photosynthesis requires energy from the sun.