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.

Input: Consider Input: Fact 1: thick fur can be used for keeping warm. 
Fact 2: With a thick fur coat and 4 inches of fat a bear stays warm.

Output: Bears have thick fur to protect from the cold.


Input: Consider Input: Fact 1: most canyons are formed by flowing rivers through erosion over long periods of time. 
Fact 2: Erosion was monitored by means of erosion pins.

Output: Canyon changes are tracked with pins.


Input: Consider Input: Fact 1: Chloroplasts are organelles that are found in the cells of plants and algae. 
Fact 2: Chloroplasts Chloroplasts contain photosynthetic pigments.


Output: Organelles contain photosynethic pigments.