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: infection can cause bodily tissues to swell. 
Fact 2: Bacteria can cause infection.

Output: Bacteria can cause bodily tissues to swell.


Input: Consider Input: Fact 1: Cells are organized into tissues, and tissues form organs. 
Fact 2: Neurons are the cells of nerve tissue.

Output: neurons make up nerve tissue.


Input: Consider Input: Fact 1: Adolescence is a time of significant mental, emotional, and social changes. 
Fact 2: During puberty, changes in hormones and changes in thinking contribute to mood swings.


Output: adolescence is a time of puberty.