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: Some mollusks are nearly microscopic. 
Fact 2: Interestingly, a squid is also a mollusk.
Example Output: Some squids are nearly microscopic.

Example Input: Fact 1: Viruses are not cells at all, so they are neither prokaryotes nor eukaryotes. 
Fact 2: Viruses Viruses Viruses are simple units which invade cells.
Example Output:
Viruses are simple units which are neither prokaryotes nor eukaryotes.