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: Protozoa make humans sick when they become human parasites. 
Fact 2: Malaria parasites are transmitted by mosquitos.
Example Output: Malaria is a protozoa that make humans sick.

Example Input: Fact 1: water causes refraction of light. 
Fact 2: When light shines through a drop of water or prism, it bends or is refracted inside the droplet.
Example Output: Light is bent inside of water droplets.

Example Input: Fact 1: hunting requires seeing prey. 
Fact 2: Predators attack, kill and eat prey.
Example Output:
Hunting allows for predators to attack, then kill and eat.