TASK DEFINITION: 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.
PROBLEM: Fact 1: soil is formed by weathering. 
Fact 2: Dirt is really misplaced soil.

SOLUTION: Dirt is formed by weathering.

PROBLEM: Fact 1: a measuring cup is used for measuring the volume of substances. 
Fact 2: For dry ingredients, use a graduate measuring cup set.

SOLUTION: graduations are used for measuring volume of substances.

PROBLEM: Fact 1: the volume of an object can be used to describe the size of that object. 
Fact 2: Volume is the amount of space an object or substance takes up.

SOLUTION:
The size of an object is also the amount of space the object takes up.