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: Oxygen is essential for cellular respiration for all aerobic organisms. 
Fact 2: Less oxygen for the mother means less oxygen for the baby.
Example Output: Mothers need respiration for their babies.

Example Input: Fact 1: microorganisms cause food to spoil. 
Fact 2: Food poisoning occurs when spoiled food is eaten.
Example Output: Microorganisms cause food poisoning.

Example Input: Fact 1: a light bulb is used for seeing in the dark. 
Fact 2: After stumbling around in the dark tunnels of the basement, Marco finds the control room.
Example Output:
Light bulbs are used to avoid stumbling around in basements.