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: Food is easier to chew because it is moistened by saliva from the salivary glands. 
Fact 2: Since saliva is made from blood plasma, many chemicals present in blood are also present in saliva.
Example Output: Food is easier to chew because it is moistened by chemicals made from blood plasma.

Example Input: Fact 1: a pan is used for cooking food by heating food in it on a stove. 
Fact 2: Heat pan, add cooking oil to pan.
Example Output: cooking oil heats food.

Example Input: Fact 1: a tape measure is used to measure length. 
Fact 2: Measurements are taken in inches with a tape measure.
Example Output:
length is measured in inches.