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: the Himalayas were formed by rock folding. 
Fact 2: Movements in the earth's crust have folded and cracked the older rocks.
Example Output: the Himalayas were formed from older rock.

Example Input: Fact 1: Plants respond to daily and seasonal cycles and to disease. 
Fact 2: Green bean plantings continue to be planted.
Example Output: Green beans respond to daily and seasonal cycles and to disease.

Example Input: Fact 1: Prokaryotes are single-celled organisms that lack a nucleus. 
Fact 2: Biconcave cell lacks a nucleus.
Example Output:
Prokaryotes are single-celled organisms that are biconcave cells.