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: Hagfish are noted for secreting large amounts of thick, slimy mucus. 
Fact 2: Today, jawless fish include the lampreys and hagfishes.
Example Output: Some jawless fish secrete large amounts of thick, slimy mucus.

Example Input: Fact 1: crossing two living things with recessive traits causes their offspring to have that recessive trait. 
Fact 2: Mutations cause various differences between the offspring and their parents.
Example Output: recessive traits causes Mutations.

Example Input: Fact 1: braking can cause skidding. 
Fact 2: Brakes work because friction acts against slip.
Example Output:
friction can cause skidding.