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: Constriction occurs when the muscular walls of blood vessels contract. 
Fact 2: Dehydration causes vessels to constrict and blood to thicken.

Output: Constriction causes blood to thicken.


Input: Consider Input: Fact 1: freezing means changing from a liquid into a solid by reducing heat energy. 
Fact 2: Ice is a cold frozen liquid.

Output: Ice is made from reducing heat energy.


Input: Consider Input: Fact 1: smoking causes direct damage to the lungs. 
Fact 2: Smoking causes irreversible lung damage by breaking the air sacs within the lungs.


Output: Smoking causes direct damage to the air sacs.