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: Cells are organized into tissues, and tissues form organs. 
Fact 2: Neurons are the cells of nerve tissue.
Example Output: neurons make up nerve tissue.

Example Input: Fact 1: healing requires rest. 
Fact 2: Healing and cell regeneration follows.
Example Output: cell regeneration requires rest.

Example Input: Fact 1: a plant requires photosynthesis to grow. 
Fact 2: Hexazinone inhibits photosynthesis.
Example Output:
Hexazinone inhibits a plant to grow.