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: Blood is a fluid connective tissue. 
Fact 2: Liquids A fluid is any substance that flows, and liquids are examples of fluids.
Example Output: blood is a liquid connective tissue.

Example Input: Fact 1: friction causes an object to lose energy. 
Fact 2: Byproducts of friction Friction is a force acting against motion.
Example Output: Force acting against motion causes an object to lose energy.

Example Input: Fact 1: Muscles can only contract. 
Fact 2: When contracted the triceps femoris pulls the thigh forward and extends the shank.
Example Output:
Muscles like the triceps femoris are used to move bones.