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: Scientists who find and study fossils are called paleontologists. 
Fact 2: Earth scientists study fossils.
Example Output: Paleontologists are earth scientists.

Example Input: Fact 1: Flowers form on the dominant sporophyte plant. 
Fact 2: Angiosperm sporophyte is dominant.
Example Output: Flowers form on angiosperms.

Example Input: Fact 1: extreme heat and pressure change rock into metamorphic rock. 
Fact 2: Metamorphic Rocks Metamorphic Rocks Metamorphic rocks are formed by pressure and heat.
Example Output:
extreme heat and pressure form a type of rock.