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: eating food that contains pesticides can have a negative impact on humans. 
Fact 2: Foods such as porous strawberries are hard to wash free of pesticides.
Example Output: Eating unwashed strawberries can have a negative impact on humans.

Example Input: Fact 1: Organisms that live in marine biomes must be adapted to the salt in the water. 
Fact 2: Marine life is equally diverse and abundant, from tiny plankton to blue whales.
Example Output: blue whales must be adapted to the salt in the water.

Example Input: Fact 1: Birds have relatively large brains and a high level of intelligence. 
Fact 2: Roosters and sparrows are birds.
Example Output:
roosters have relatively large brains and a high level of intelligence.